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4store
4store is a database storage and query engine that holds RDF data. 4store's main strengths are its performance, scalability and stability. It does not provide many features over and above RDF storage and SPARQL queries, but if your are looking for a scalable, secure, fast and efficient RDF store, then 4store should be on your shortlist.
AE-DIR
Authorized Entities Directory (Æ-DIR) is a Privileged Identity and Access Management (IAM/PIM/PAM) based on OpenLDAP Objectives:
  • Strictly follow need to know and least privilege principles
  • Agile data maintenance by consequent delegation of manageable small areas
  • Provide meaningful audit trails for compliance checks
  • Secure defaults
AOLserver
AOLserver is a multithreaded, TCL-enabled, massively scalable and extensible Web server designed for large scale, dynamic Web sites such as Digital City and AOL.COM. It includes complete database integration, dynamic page scripting, and an open, extensible architecture.
APAz
aPAz is An ultra-light PHP AnonymiZer. It is intended to be a "Put it anywhere, browse everywhere application". You can use it on any Web server that uses PHP and allows socket functions.
AWStats
Advanced Web Statistics is a free tool that generates advanced web server access statistics graphically. This web server log analyzer works as a CGI or from command line and shows you all information your log contains, in few graphical web pages. It can analyze IIS 5.0+, Apache log files and some other web servers (log files with a personalized format are supported since version 3.0). It's the best statistics tool for web server with less than 200,000 visits a month. The program can measure visits, unique vistors, pages, domains/countries, OS busiest times, robot visits, search engine/keyword used, and HTTP errors. Statistics can be updated from a browser or your scheduler. The program also supports virtual servers.
Autobench
Autobench is a collection of scripts to automate the benchmarking a web server (or for conducting a comparative test of two different web servers). It is a wrapper for httperf. Autobench runs httperf repeatedly against each host, increasing the number of requested connections per second each time. It extracts the significant data from the httperf output, and delivers a CSV or TSV file which can be imported directly into a spreadsheet for analysis or GNUplotted using the included bench2graph script.
Awhttpd
'Anti-Web httpd' is a single-process Web server that relies on its inherent simplicity to be robust and secure. It has support for virtual hosts, CGI, IPv6, and more. In its default mode, though, it is easy to launch and requires no configuration files. It implements the bare minimum of HTTP 1.1 necessary to be a productive web server. It doesn't support certain requests like HEAD (anymore), but normal users will never notice the difference. POST request support is in the works, as is HTTPS/SSL support.
Boa
A high-performance Web server for UNIX-like computers
Business Integration Engine
BIE is an free software integration system that makes it easy for organizations to exchange data with external trading partners regardless of their native applications. It is truly cross-platform since it written in Java.
Castopod
Decentralized podcast hosting software to run on your own server.
Coldstore
ColdStore is a gigabyte-scale persistent object store which maps objects into a file (for persistence), can allocate objects in a minimal working-set of pages (for speed), permits library versions to change without a rebuild of the store, and permits application checkpoint/restart. Coldstore might be used to replace a database, cache highly structured objects, act as an OODB, make STL persistent, act as a Document Store for XML/SGML/HTML, create a MUD. Future projects include a virtual machine toolkit, ports of several languages, VW and byte-interpretive language workbench.
Comanche Server
Comanche is an extremely simple HTTP (web) server written entirely in Python. It does not use any of the many Python standard library modules related to HTTP serving, as it was initially written as a learning exercise. At present it does not support CGI or SSL and uses a simple fork-on-demand architecture, but is being actively improved.
Ctrlproxy
'ctrlproxy' is an IRC server with multiserver support. It runs as a daemon and connects to a number of IRC servers, then lets you to connect from a workstation and work as the user who is logged in to the IRC server. After you disconnect, it maintains the connection to the server. It acts like any normal IRC server, so you can use any IRC client to connect to it. It supports multiple client connections to one IRC server (under the same nick), so you can connect to IRC using your IRC nick, even if you have an IRC session open somewhere else. It supports logging (in the same format as the irssi IRC client), password authentication, and ctcp (in case no clients are connected).
DNRD
DNRD is a proxy DNS Daemon. It is useful for a home network where you have multiple ISPs or VPNs. DNRD can be set up to forward all DNS queries to the appropriate DNS server for each of your ISPs.
DataStatix
DataStatix is a free software for GNU/Linux and Windows useful to manage data of every kind (although it has been written to manage biomedical data), to create descriptive statistics and graphs and to export items easily to R environment or to other statistic softwares. In order to handle properly big amount of data and many concurrent users, DataStatix works with MySql database and it has been developed and tested with MySql community edition 5.5. Some features of the software are: users management (create, delete, modify password) within the software; different users levels of data access (administrator, default, read only); user defined templates (models) of data, to create new databases easily; importation and esportation of data in CSV format (used also by Calc and Excel); updating of existing data from a CSV file created with DataStatix; descriptive statistics from every data (some more kind of statistics to come); graphs from every data.
DaveDAP
* " 'DaveDAP' is now 'phpldapadmin'. " DaveDAP is a PHP-based engine to browse, search, and edit an LDAP server over the Web. You can browse your LDAP server in tree mode, or you can search for users based on any number of easily configurable criteria. Users can create and delete objects, edit their contents, and perform searches. DaveDAP aims to be a Web-based replacement for GQ.
Dico Heckert gnu.tiny.png,
Dico is a flexible modular implementation of DICT server (RFC 2229). In contrast to another existing servers, it does not depend on particular database format, instead it handles database accesses using loadable modules. The package includes several loadable modules for interfacing with various database formats, among them a module for dict.org databases and a module for transparently accessing WordNet. New modules may be written in Guile or Python. A console client program, dico, is also included.
Dolphin proxy
Dolphin is a lightweight HTTP proxy server. It is multi-threaded, easy to configure, and easy to use. This package is not maintained anymore. Its entry is kept here for historical purposes only. See also: dolphin-emu
Dovecot
'Dovecot' is an IMAP server whose major goals are security and extreme reliability. It uses index files to optimally store the mailbox state, which makes it very fast even with huge mailboxes. Indexes won't prevent external mailbox updates, so Dovecot is still fully compatible with standard Maildir and mbox formats. There's also a fully featured POP3 server included.
Duro
The goal of the Duro project is to create a library which is as compliant with the proposed database language D as it is possible for a C library. This library is supposed to serve as a basis for a truly relational database management system (TRDBMS).
  • Tuples and tables (relvars).
  • Relational algebra: RENAME, select (restrict), project, EXTEND, JOIN, SEMIJOIN, UNION, INTERSECT, MINUS, SEMIMINUS, SUMMARIZE PER, DIVIDEBY PER, WRAP, UNWRAP, GROUP, and UNGROUP.
  • Virtual tables (views).
  • Locking and nested transactions.
  • Duro tables are true sets -- uniqueness of tuples (rows) is always enforced. When creating real tables, at least one candidate key must be supplied. A candidate key may be empty.
  • User-defined types (including type constraints) and operators.
  • Declarative integrity.
  • Tcl interface, including support for relational expressions in Tutorial D syntax and operators implemented in Tcl ("stored procedures").
  • Simple GUI admin tool.
xs Duro is implemented on top of the Berkeley DB database library.
ENodes
ENodes is a reliable web development and publishing framework written in Perl and geared on mod_perl.
Operating like a complete layer on Apache, it allows to manage multiple domains dispatched between multiple webmasters. It includes versioning, access lock, parallel version test, fine granularity of permissions and version management, user workflow, import/export mechanisms and a fully integrate plugin interface.
It is nearly stable and already used by many websites.
FerretDB
Modified from README.md: FerretDB was founded to become the de-facto free software substitute to MongoDB. FerretDB is an free software proxy, converting the MongoDB 6.0+ wire protocol queries to SQL - using PostgreSQL or SQLite as a database engine. FerretDB is compatible with MongoDB drivers and popular MongoDB tools. It functions as a drop-in replacement for MongoDB 6.0+ in many cases. Features are constantly being added to further increase compatibility and performance.
Ffproxy
ffproxy is a filtering HTTP proxy server that can filter by host, URL, and/or header. Custom header entries can be filtered and added. It can even drop its privileges and optionally chroot() to a directory. It supports logging to syslog() and using another auxiliary proxy server.
Fnord httpd
'fnord' httpd is a small HTTP server (15k static binary). It is fast, and supports sendfile and connection keep-alive, virtual domains, content-ranges, and IPv6. It does transparent content negotiation for special cases (html - html.gz, or gif - png), and has directory index generation.
Ftpcluster
'ftpcluster' integrates a number of individual FTP servers into a single large server. You can think of it as a network disk array with FTP as the access protocol.
GAdmin-ProFTPD
GAdmin-ProFTPD is a GTK+ frontend for the ProFTPD standalone server. It gives admins access to virtual hosting and eight layers of security, including chrooted users and encrypted transfers on both the data and/or control channels.
GUJ Chat
GujChat is a chat server management system which can manage different chat servers, each one serving different rooms. A single GujChat installation is capable of serving diverse Webmasters with different templates, rooms and configurations. It is particularly useful for webmasters who are looking for a chat room or a chat server and service providers who offer chat servers to their clients. GujChat is completely multi-lingual and can be installed under any Servlet API 2.2 (or newer) compliant servlet container.
Gnowsys Heckert gnu.tiny.png
GNOWSYS is an acronym for "Gnowledge Networking and Organizing SYStem." It is a web based object oriented database server with each object provided by an unique URL. GNOWSYS is a tool to construct and store persistently a Gnowledge Base (GB). The GB consists of the following three groups of constructor classes (system and temporal classes under development): PredicateGroup: relationType, relation, functionType, function Object Group: metaType, class, object (with provision to have classes and objects of declarative, procedural, encapsulated, temporal etc.) Structure Group: systemType, system, flowType, flow, processType, process GNOWSYS indexes data and metadata of objects in a catalogue for faster queries. Optionally, data can remain anywhere on the Internet (only the metadata stays in the database). Surrogates of procedures (classes, functions, and system calls) can also be installed in the database as special objects. These procedures execute as web services, so users can design applications without writing program in any programming language by specifying the semantics of a program and mapping the elements of the program to the surrogates of procedures is sufficient for GNOWSYS to test the application design.
Gnu Hosting Helper
This package provides tools to manage many of the aspects of a hosting environment.It also provides a client utility to reduce the need for staff to perform tasks that a client needs such as managing email accounts. GNU HH will support multiple servers from a single adminstration console and single client console. The system is completely dynamic tracking resource allocations across all managed servers. The system will operate on a single server or a completely distributed network of many machines.
GoAccess
GoAccess is a real-time Apache web log analyzer and interactive viewer that runs in a terminal and provides fast and valuable HTTP statistics for system administrators that require a visual report on the fly.
GproFTPd
GProFTPD is a GNOME frontend for the ProFTPD standalone server.
Gq
GQ is a GTK-based LDAP client that enables you to search and browse any LDAP V2- or V3-compliant server. You can also add, edit, and delete entries. Other features include a template builder, the ability to export a subtree or a whole server to LDIF, the ability to use any number of servers, and the ability to search based on a single argument or LDAP filter.
HTTP-Replicator
'Replicator' is a replicating HTTP proxy server. Files that are downloaded through the proxy are transparently stored in a private cache, so an exact copy of accessed remote files is created on the local machine. It is, in essence, a general purpose proxy server, but especially suited for maintaining a cache of Debian or Gentoo packages.
Halberd
To cope with heavy traffic loads, web site administrators often install load balancer devices. These machines hide (possibly) many real web servers behind a virtual IP. They receive HTTP requests and redirect them to the real web servers in order to share the traffic between them. Halberd is a tool aimed at discovering real servers behind virtual IPs.
HealthBox
HealthBox is a convenient way to manage health information. Instead of each app having to record inforamtion within it's own ecosystem, HealthBox creates a place for developers to centralize health information. Say you have a program that records your steps, one that monitors work outs, and a third program to track your nutrient intake. Typically, if you wanted to access your information, you'd have to use each respective service's interface. With HealthBox, those developers would be able to store all the information in one place, making it much easier for you to compare different health metrics, and share information between services.
ICTFax
ICTFax is free software white lable internet fax software that support email to fax , web to fax as well as fax to web and fax to email also it support integration with existing fax machines. ICTFax features both outbound faxing and inbound fax over internet through DID numbers
ImgSvr
ImgSvr is a Web image server, which allows users to browse digital images. It is a full HTTP server, which is specifically designed for image publishing.
InfiniSQL
InfiniSQL is a distributed in-memory NewSQL relational database management system (RDBMS). It excels at performing complex transactions which involve records on multiple server nodes. It is engineered around the actor model of concurrent programming, which enables unique scalability capabilities. InfiniSQL is currently in an alpha state, and the project is eagerly seeking developers, early adopters, and people who want to help build a community around it.
Interchange
Interchange is a complete web-based application server It can create, automate and database-enable your web-site, and build on-line applications. It can be used as part of a standalone system or as part of a larger system. The Interchange demo application is ecommerce-based, so ecommerce has inevitably become its main use. The ecommerce demo and admin system supports sales, order processing, content management, customer service, and has been implemented for traditional retail sales, digital goods delivery, B2B parts re-ordering, non-commerce content management, auctions, order status checking, and supply chain management (among others). It can be integrated with payment processing services, ERP systems, point-of-sale systems, accounting systems, external content management systems, and Java-based application servers (among others). Interchange is made up of the following components: database abstraction layer, a generic templating system, transaction routing rules, a customer information object, a universal localization scheme, a security blackout definition, profiles, filters, a search language, and session management.
Iplog
This is a candidate for deletion: Links broken. No archive.org entry. Email to maintainer broken. Poppy-one (talk) 17:19, 5 August 2018 (EDT) iplog is a TCP/IP traffic logger. Currently, it is capable of logging TCP, UDP, and ICMP traffic. iplog is able to detect TCP port scans, TCP null scans, FIN scans, UDP and ICMP "smurf" attacks, bogus TCP flags, TCP SYN scans, TCP "Xmas" scans, ICMP ping floods, UDP scans, and IP fragment attacks. iplog is able to run in promiscuous mode and monitor traffic to all hosts on a network. iplog uses libpcap to read data from the network and can be ported to any system that supports pthreads and on which libpcap will function.
KLone
KLone is a fully-featured, multiplatform Software Development Kit which allows dynamic pages to be written in C/C++ with usual <% code %> style. The pages can then be embedded, in compressed and/or encrypted form, into a single executable containing also KLone's HTTP/S server. Given its nature, it can be linked natively to any C/C++ library (database, XML, graphics, etc.), without an intermediate layer and it is expecially suited for low-resource and embedded systems.
KSS (Kinetic Style Sheets) framework
KSS enables you write rich Ajax applications without having to code Javascript. It does this by using a CSS like resource, this is called a KSS file. All that you as a developer need to do is write files like these and implement server side Python. This Python package contains the Javascript engine and the server side infrastructure. The package forms the base for integration with specific web development frameworks. To see if there is support for your framework go to the KSS website.
Kadet
Kadet is a multi-threaded, multi-purpose server. It is highly extensible, well written, and has a great set of libraries including built-in scripting, a persistent database, object memory management, etc. It is very easy to develop. The server protocol is currently HTTP/1.1. SSL is supported via OpenSSL.
Libre Lists
Libre Lists is a Free and Open Source alternative to Microsoft Lists written in Python and Flask. It is a lightweight, self-hosted web application that works with SQLite databases. It also converts your SQLite database into JSON output or CSV files for the rest of your applications.
Librsync
'Librsync' provides checksum-based differencing. Currently its only application is rproxy, which provides diffs to previously cached Web pages and images in order to speed download time.
Lighttpd
'lighttpd' is a secure, fast, compliant, and very flexible Web server which has been optimized for high-performance environments. It has a very low memory footprint compared to other Web servers, and it takes care of CPU load. It has an advanced feature set that includes FastCGI, CGI, Auth, Output-Compression, URL-Rewriting, and much more.
LineControl Server
LineControl remotely controls the connection of a GNU/Linux masquerading server using multiple clients. It takes care with the number of clients using the connection and decides, based upon this number, whether the connection should be up or down. The clients show connection time and throughput statistics. The package supports different connection types, such as analog modems, ISDN, or even cable modems and ADSL devices.
Lingerd
Lingerd is a daemon designed to properly close network connections from an HTTP server (ie Apache). This frees the server from doing the boring but time-consuming job of "lingering closes", and lets each process go on to the next connection immediately. As a result, Apache needs fewer processes to handle high loads. This saves memory, reduces kernel contention, and makes Apache more scalable.
LiquidFeedback
LiquidFeedback is an open-source software, powering internet platforms for surveys, proposition development and decision making. LiquidFeedback is an independent open source project. The software is published under MIT license by the Public Software Group of Berlin, Germany. The developers of LiquidFeedback have teamed up in the Association for Interactive Democracy to promote the use of electronic media for democratic processes.
Mail2web
mail2web makes a mail archive, organised as RFC 5322 files in directories, accessible by HTTP.
Mailfront
'mailfront' is a set of customizeable network protocol frontends for mail servers, replacing or supplementing the features available with the MTA software. It contains complete SMTP, QMQP, QMTP, and POP3 front-ends as well as an authentication module for IMAP. The mail delivery front-ends also contain internal address filtering features. Two SMTP back-ends are provided. One delivers mail to qmail-queue, mimicking most of the behavior of qmail-smtpd, with the addition of support for SMTP AUTH. The other rejects all SMTP commands if $SMTPREJECT is set, and execs its command line otherwise (in order to run the above program).
Mandos
The Mandos system allows computers to have encrypted root file systems and at the same time be capable of remote and/or unattended reboots. Wouldnââ¬â¢t it be great if you could have the security of encrypted root file systems and still have servers that could boot up automatically if there was a short power outage while you were asleep? That you could reboot at will, without having someone run over to the server to type in the password? Well, with Mandos, you (almost) can! The gain in convenience will only be offset by a small loss in security. The setup is as follows: The server will still have its encrypted root file system. The password to this file system will be stored on another computer (henceforth known as the Mandos server) on the same local network. The password will *not* be stored in plaintext, but encrypted with OpenPGP. To decrypt this password, a key is needed. This key (the Mandos client key) will not be stored there, but back on the original server (henceforth known as the Mandos client) in the initial RAM disk image. Oh, and all network Mandos client/server communications will be encrypted, using TLS (SSL).
MaraDNS
'MaraDNS' is a fully functional DNS server supporting authoritative DNS, recursive DNS, and caching DNS. It is intended for environments where a DNS server must be secure and where the server must use the absolute minimum number of resources possible. Its security features include the use of a special string library which is resistant to buffer overflows and that the code, if started as root, mandates running as an unpriviledged user in a chroot() jail.
MariaDB
MariaDB is a multi-user and multi-threaded SQL database server, designed as a drop-in replacement of MySQL. It includes all major free storage engines, including the Aria storage engine.
Mautic
Mautic is an open source marketing automation platform that provides you with the greatest level of audience intelligence, thus enabling you to make more meaningful customer connections. Use Mautic to engage your customers and create an efficient marketing strategy.
Mergelog
'mergelog' is a small and fast program which merges and sorts HTTP log files in 'Common Log Format' from Web servers behind round-robin DNS. It is designed to easily process huge logs from highly stressed servers, and can manage gzipped files.
Metahtml Heckert gnu.tiny.png
MetaHTML is a server-side programming language designed for the World Wide Web. It has a syntax that is similar to HTML and Lisp. It provides a large function library, including support for sockets, image creation and connections to other programs.
MiddleMan
MiddleMan is a fast HTTP/HTTPS proxy server that removes unwanted content and increases privacy. It uses an XML configuration file, and fully implements the HTTP 1.1 protocol, including persistent proxy connections. It has file, host, cookie, header, and content filtering, and can forward through both socks4 and regular http/https proxies.
MinIO
High Performance Storage
Mod python
Mod_python is an Apache module that embeds the Python language interpreter within the server. This lets Apache handlers be written in Python for faster and more powerful applications than plain CGI.
Mod security
'Mod_security' is an intrusion detection and prevention module for Apache Web servers. Its purpose is to protect vulnerable applications by detecting and (optionally) rejecting attacks. In addition to request filtering (using regex), it can create Web application audit logs. Unlike other similar projects, Mod_security can analyse POST payloads.
MongoDB
In Oct 2018, MongoDB's "community edition" switched from AGPLv3 to another license making it harder for free software users to depend on it. The source linked in this entry is the last available code base under the AGPLv3. See FerretDB for an alternative. MongoDB (from "humongous") is a scalable, high-performance, schema-free, document-oriented database. Features:
  • Document-oriented storage (the simplicity and power of JSON-like data schemas)
  • Dynamic queries
  • Full index support, extending to inner-objects and embedded arrays
  • Query profiling
  • Fast, in-place updates
  • Efficient storage of binary data large objects (e.g. photos and videos)
  • Replication and fail-over support
  • Auto-sharding for cloud-level scalability
  • MapReduce for complex aggregation
  • Commercial Support, Hosting, and Consulting
Monkey HHTP Daemon
Monkey HTTP Daemon is a small, fast Web server. It is based on the HTTP 1.1 protocol. Features include language support, GET, POST, and HEAD methods, CGI, PHP4, a config file (optional for every user), a mime.types file, virtual hosts, the ability to deny URLs and IPs, to run as a different user (such as nobody), serve users home directories, and more.
MyDNS
MyDNS is a free DNS server for *nix. It was implemented from scratch and is designed to serve records directly from an SQL database (currently either MySQL or PostgreSQL). Its primary objectives are stability, security, interoperability, and speed, though not necessarily in that order. MyDNS does not include recursive name service, nor a resolver library. It is primarily designed for organizations with many zones and/or resource records who desire the ability to perform real-time dynamic updates on their DNS data via MySQL.
Myserver
MyServer is a powerful web server designed to be easily run on a personal computer by the average computer user. It is a multithread application and supports HTTP, HTTPS, CGI, ISAPI, WinCGI and FastCGI protocols. You can share files in minutes.
NextTypes
NextTypes is a standards based information storage, processing and transmission system that integrates the characteristics of other systems such as databases, programming languages, communication protocols, file systems, document managers, operating systems, frameworks, file formats and hardware in a single tightly integrated system using a common data types system. NextTypes is a relational/network/objects/files hybrid database system with high level SQL interface, extensive primitive types list, JSON/JSON-LD/XML/Smile/WebDAV/CalDAV/iCalendar/RSS data access, REST interface, customizable MVC architecture, optimistic concurrency control, HTML5/CSS3/SVG/Javascript responsive graphical interface, multilanguage, UTF-8 encoding, syntax highlighting or WYSIWYG editors, robots.txt and sitemap management, text extraction/fulltext search, document management, virus scanning, DoS/SQL injection/CSRF/XSS protection, passwords/X.509 certificates authentication, logging and backup system.
NocoDB
NocoDB turns any MySQL, PostgreSQL, SQLite database into a spreadsheet with REST APIs. It supports basic and fields operations, multiple view types, different permissions, sharing, variant cell types, access control with roles, and others.
OpenInteract
'OpenInteract' is an extensible Web application server that includes a robust system of components, object-oriented data access, a consistent security scheme for both tasks and data objects, a simple user and group management system, and a packaging system that makes it easy to distribute custom applications. It is stable, and runs out of the box on five different databases.
Openbarter
openBarter extends the mechanism of a CLOB - the central part of regular markets - and implements a multilateral barter. It is based on an extension of PostgreSQL.
Openstreetmap-website
OpenStreetMap is a project for creating and distributing free geographic data for the world.
Orthanc
Orthanc aims at providing a simple, yet powerful standalone DICOM server. It is designed to improve the DICOM flows in hospitals and to support research about the automated analysis of medical images. Orthanc can turn any computer running Windows or GNU/Linux into a DICOM store (in other words, a mini-PACS system). Its architecture is lightweight and standalone, meaning that no complex database administration is required, nor the installation of third-party dependencies. What makes Orthanc unique is the fact that it provides a RESTful API. Thanks to this major feature, it is possible to drive Orthanc from any computer language. The DICOM tags of the stored medical images can be downloaded in the JSON file format. Furthermore, standard PNG images can be generated on-the-fly from the DICOM instances by Orthanc. Orthanc lets its users focus on the content of the DICOM files, hiding the complexity of the DICOM format and of the DICOM protocol.
POPular
POPular is a suite of programs for setting up a large distributed mail cluster. Included are a POP3 server and proxy and several utility programs for delivering mail into mailboxes, listing the current connections, and configuring the servers. POPular supports virtual servers, scales to millions of mailboxes, is completely configurable at runtime and uses a flexible authentication mechanism through shared library modules.
Paperclips
Paperclips is a Java Servlet API 2.3 compliant servlet container. It supports HTTP/1.1, session load balancing and is completely modular so administrators can install just the parts they need.
Papercut NNTP server
Papercut is a multi-threaded NNTP server whose main objective is to integrate Web-based message board software (Phorum, for example) with a Usenet front-end. Its extensibility lets developers write their own containers to store Usenet articles (messages). The code is extensible enough that you could write new containers to integrate the news server with other Web message board projects or even other ways to store the messages.
Pen
Pen is a load balancer for "simple" TCP-based protocols such as HTTP or SMTP. It allows several servers to appear as one to the outside. It automatically detects servers that are down and distributes clients among the available server for high availability and scalable performance. The load balancing algorithm tracks clients and tries to send them back to the server they visited the last time. The client table has slots (default 2048, settable through command-line arguments). When the table is full, the least recently used one is discarded to make room for the new one. This is superior to a simple round-robin algorithm, which sends a client that connects repeatedly to different servers. This breaks applications including most modern web applications) that maintain state between server connections.
Planplan
Planplan is an open source data product search engine allowing users of the community platform to find different everyday objects via verified professionals with a very large number of positive opinions.
Pling Store
Pling Store is an application to search and download themes, wallpapers, software applications and add-ons, as well as other creative content like audio, videos or comics, provided the content is released under liberal licensing terms like the GPL or Creative Commons from participating openDesktop.org sites.
Polipo
'Polipo' is a lightweight caching Web proxy that was designed as a personal cache. It is able to cache incomplete objects and will complete them using range requests. It will use HTTP/1.1 pipelining if supported by the remote server.
Portmon
Portmon is a daemon that is able to monitor network services and send notification in the event that a server goes down. Portmon was designed to be able to monitor a large number of servers/workstations and give very configurable notification in the event of a network failure.
PostgreSQL
PostgreSQL is a powerful database system with a strong reputation for reliability, data integrity, and correctness. It supports the SQL standard and is fully ACID compliant. It offers many advanced features, including complex queries, foreign keys, triggers, views, transactional integrity and multiversion concurrency control. It features native programming interfaces for C/C++, Java, .NET, Perl, Python, Ruby, Tcl, and ODBC.
PredictionIO
PredictionIO is a free software Machine Learning server system. It enables developers and data engineers to build smarter web and mobile applications through a simple set of APIs. Admin UI is provided for developers to select and tune algorithms.
PrivateBin
PrivateBin is a text-storage self-hosted server with zero knowledge of pasted data. Data is encrypted/decrypted in the browser using 256 bits AES.
ProrepTK
Database replication system for OpenEdge Progress DB to other database backends. Progress is a proprietary database format with no open source options for data import/export/replication. This project provides a free software replication and export option, and can act as a first and intermediate steps in migrating your data from Progress and into MySQL or other database software.
Pthrlib
'pthrlib' is a library and toolkit for easily and quickly writing small, fast, HTTP/1.1-compliant Web servers. The distribution includes a lightweight cooperative threading library, a buffered I/O library, a library for writing HTTP/1.1 RFC-compliant servers, a library for writing CGI scripts that run inside the server, and an ftp client library. Examples, full manual pages documenting every function, and a production quality micro-webserver called rws are also included.
Pure-FTPd
Pure FTP Server is a fast, production quality, standards-conformant FTP server based on Troll-FTPd. It has no known buffer overflows, is trivial to set up, and is especially designed for modern kernels. Features include PAM support, IPv6, chroot()ed home directories, virtual domains, built-in 'ls', FXP protocol, anti-warez system, bandwidth throttling, bounded ports for passive downloads, an LDAP backend, and XML output.
Py-RADIUS
radius.py is a pure Python module implementing client side RADIUS authentication as defined by RFC2138.
QPopper
Qpopper is a widely used server for the POP3 protocol. It includes TLS/SSL support, very fast start-up times, and reduced I/O at session close. This server is fully compliant with RFCs 1939 and 2449, and supports Kerberos V4, if enabled.
Redis
Redis is an advanced key-value database. It is similar to memcached but the dataset is not volatile, and values can be strings, exactly like in memcached, but also lists, sets, and ordered sets. All this data types can be manipulated with atomic operations to push/pop elements, add/remove elements, perform server side union, intersection, difference between sets, and so forth. Redis supports different kind of sorting abilities.
Riak
High Performance Storage
Roxen
Graphical Web browser based management interface. Features include:
  • Default strong 128/168-bit encryption over SSL3
  • Platform independent; runs on almost any server operating system
  • Single-process architecture for controlled and unlimited scalability
  • Unicode and other character sets for multilingual/localized Web sites
  • Extensibility through Java, Java servlets, PHP, CGI, FastCGI, FrontPage Extensions, SSI, and others
  • Excellent for virtual hosting of several web sites
Rproxy
The rproxy extensions to HTTP let a server generate a diff relative to a cached instance, whether an HTML page or an image, in a way that is completely general, and transparent to both the server and user agent. This improves response times and reduces network usage, which is particularly important given the increase in dynamic content on the Web (with dynamic content a resource must be exactly the same as the cached instance, or it is downloaded from scratch).
Rws
'rws' is a small, fast web server that complies (mostly) with HTTP/1.1. It serves files, includes an mmap(2) file cache and supports directory listings, CGI script execution (NPH scripts only), virtual hosts, aliases, and shared object scripts: (fast CGI scripts that are dynamically linked into the server memory at runtime.
SIP Express Router
* " November 04, 2008 - SER joins the sip-router project "
  • " First is important to clarify: from version 3.0.0 on, Kamailio and SER are identical in terms of source code. "
SER or SIP Express Router is a very fast and flexible SIP (RFC3621) server. It handles thousands of calls per second on low-budget hadware. A C shell-like scripting language provides full control over the server's behaviour. Its modular architecture lets users load only the required functionality. The following modules are available: digest authentication, CPL scripts, instant messaging, MySQL support, a presence agent, Radius authentication, record routing, an SMS gateway, a Jabber gateway, a transaction module, a registrar, and user location.
Saltcorn
Saltcorn is a platform for building database web applications without writing a single line of code. Use the intuitive point-and-click, drag-and-drop user interface to build the whole application. It is a complete end-to-end solution for the front-end, backend and database of your application, and it manages both the build and the hosting stages of your application life-cycle with an intuitive point-and-click, drag-and-drop user interface. Saltcorn focuses on database-backed applications built for a mobile and desktop web browsers, for yourself, internally for your team or company, or for the public.
SavaPage
SavaPage is a Libre Print Portal Solution that uses Open Standards and Commodity Hardware for Secure Pull-Printing, Pay-Per-Print, Delegated Print, Job Ticketing, Auditing and PDF Creation.
Scylla
Very fast NoSQL database that implements the APIs of Apache Cassandra and Amazon DynamoDB.
SmartCache
Smart Cache is a pure Java proxy cache server. It can cache any pages and make them available for offline browsing. Other features include a URL filter, cookie filter, ability to fake User-Agents, Referer, and Cookie headers, Web forwarder (accelerator) mode, background downloading, multiple logs, fast operation, very configurable garbage collection, cache directory structure copies server structure, and cached files that are ready for use (no headers inside). It can be also used as a replacement for your browser's internal diskcache, which makes faster, more anonymous and offline browsing available.
Snowbox
'Snowbox' is a small (600 lines of code) and secure POP3 server written in Perl. It runs exclusive from 'inetd' and is easy to set up. It implements all necessary POP3 commands, supports APOP authentication, and drops root privileges and continues running as a user process after the authorization stage. The maildrop is kept in memory while running; no temporary files are written.
Soju
soju is a user-friendly IRC bouncer. soju connects to upstream IRC servers on behalf of the user to provide extra functionality. soju supports many features such as multiple users, numerous IRCv3 extensions, chat history playback and detached channels. It is well-suited for both small and large deployments.
Sphinx Search
Sphinx is an open source full text search server, designed from the ground up with performance, relevance (aka search quality), and integration simplicity in mind. It's written in C++ and works on Linux (RedHat, Ubuntu, etc), Windows, MacOS, Solaris, FreeBSD, and a few other systems. Sphinx lets you either batch index and search data stored in an SQL database, NoSQL storage, or just files quickly and easily — or index and search data on the fly, working with Sphinx pretty much as with a database server. A variety of text processing features enable fine-tuning Sphinx for your particular application requirements, and a number of relevance functions ensures you can tweak search quality as well. Searching via SphinxAPI is as simple as 3 lines of code, and querying via SphinxQL is even simpler, with search queries expressed in good old SQL. Sphinx clusters scale up to tens of billions of documents and hundreds of millions search queries per day, powering top websites such as Craigslist, Living Social, MetaCafe and Groupon... to view a complete list of known users please visit our Powered-by page.


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