Semantic search
- 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. "
- 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.
- Spyce
- SPYCE is a Web server plugin that supports simple and efficient Python-based dynamic HTML scripting. Those who like Python and are familiar with JSP, PHP, or ASP, should look at this engine. It can generate dynamic HTML content just as easily, using Python for the dynamic parts. Its modular design makes it very flexible and extensible. It supports FastCGI, CGI and mod_python to plugin into Apache and most other Web servers, and can also be used as a command-line utility for HTML pre-processing, or as a web server proxy.
- Sqlnotex
- sqlNotex is a multi-platform free software useful to manage a large amount of textual notes in Markdown format on a single computer or in a local network using the open source database Firebird. The notes are divided into notebooks and, within them, in sections, and it is possible to associate to each note a list of activities to be done, a series of attachments (files of any kind), tags and links to other notes. The search function may find the wished notes starting from the title, the text content, the modification date, the tags, the name of the attachments or activities. Files of Microsoft Word (docx), LibreOffice Writer (odt) and of unformatted text (txt) can be imported as plain text in a new note, while the original file is attached to it. The text of the notes can be formatted if it is written by the user in Markdown format. The titles are displayed in bold and with a larger font than the rest of the text, while the various markers (asterisk, slash, etc.) are formatted with their own color. It is possible to copy the text of a note with any possible activities in HTML format and paste it into a word processor, or display it in the browser, or insert it into a new LibreOffice Writer document with one-click functionality, thus obtaining a regularly formatted document.
- Squid
- Squid is a high performance Web proxy cache that can be arranged hierarchically for an improvement in response times and a reduction in bandwith usage. Squid runs on all popular Unix platforms.
- Supergiant
- Run dockerized apps and manage hardware like one giant, efficient computer. Supergiant makes it easy to deploy faster and reduce hardware expenses. Supergiant is built on Kubernetes, the library build made to run Google Compute Engine. It’s purpose is to help make managing stateful apps in a containerized environment easier and more performant.
- TZMud
- TZMud uses several high-quality Python libraries to handle basic functions so that it can concentrate on the actual MUD functions:
- Twisted to handle networking and event loop,
- ZODB to store the data, and
- Pyparsing to parse player input.
- Tahoe-LAFS
- Tahoe-LAFS is a decentralized data store. It distributes your filesystem across multiple servers, and even if some of the servers fail or are taken over by an attacker, the entire filesystem continues to work correctly and to preserve your privacy and security.
- Thy
- Thy is a lightweight HTTP daemon that is designed to be clean and fast, yet powerful enough to serve many hits a day. Despite its small size, it supports CGI, IPv6, SSL/TLS, and on-the-fly compression.
- Tpop3d
- 'tpop3d' is a POP3 server whose authentication subsystem is especially extensible. Supported authentication mechanisms include auth-pam (Pluggable Authentication Modules) and auth-passwd to mediate access between users and their Unix-style mailboxes, auth-mysql which uses vmail-sql to mediate access to virtual-domain email, auth-ldap (for authentication of users against an LDAP directory), auth-other (lets you authenticate with an external program communicating via pipes), and auth-perl (lets you authenticate users with custom Perl code). There is integrated support for POP-before-SMTP relaying. tpop3d supports traditional (BSD-format) mailspools and the maildir format of qmail.
- Trokam
- Trokam is a project to develop a search engine based on: collaborative web crawling, easily replicable servers to enable Organizations and Companies collaborate with dedicated servers connected to a load balancer an collaborative development.
- Tux Perl
- tux_perl is a Perl extension for Tux. Tux is a high speed web server from Redhat. With the non-blocking event loop structure and the zero copying technique, Tux can provide static content at very fast speed. Tux also provide an interface to develop user space extensions. tux_perl works as an user space module of Tux, and interprets Perl scripts to provide dynamic contents. Tux is embedded into Linux kernel, so tux_perl only work with Linux. Perl interpreter is also necessary. GCC compilers is required to build some C libraries.
- VNC Reflector
- VNC Reflector is a specialized VNC server which acts as a proxy between a real VNC server (a host) and a number of VNC clients. It was designed to work efficiently with large number of clients. It can switch between different hosts on the fly, preserving client connections. It supports reverse host-to-reflector connections and can save host sessions on disk.
- Vaultwarden
- Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. It is compatible with upstream Bitwarden clients.
It is a libre password manager that stores sensitive information such as website credentials in an encrypted vault.
Features
Full implementation of Bitwarden API is provided including:
- Organizations support
- Attachments
- Vault API support
- Serving the static files for Vault interface
- Website icons API
- Authenticator and U2F support
- YubiKey and Duo support
- VideoCache
- VideoCache is a squid url rewriter plugin written in Python to facilitate youtube, metacafe, dailymotion, google, vimeo, redtube, xtube, youporn, msn soapbox, tube8, tvuol.uol.com.br, blip.tv, break.com videos and wrzuta.pl audio caching. It can cache videos from various websites in a separate directory (other than squid cache), in a browsable fashion and can serve the subsequent requests from the cache. It helps in saving bandwidth and loading time of the videos. VideoCache is currently used by many ISPs.
- Vlogger
- 'vlogger' is a logger daemon for Apache. It will accept piped logfile input, split it according to its corresponding virtual host (using a file cache to avoid resource limitations), and write it to disk. It automatically rotates all files and tracks them using timestamps. It is intended as a replacement for cronolog or httplog.
- VncSelector
- VncSelector lets users manage currently active VNC server sessions. This can be particularly useful in a thin client situation.
- W3perl
- Web logfile analyser written in Perl. All major Web stats are available (referer, agent, session, error, etc.). Users can customise reports via configuration files, and an administration interface control is available.
- WACS
- WACS is a web based application for the management of and access to adult material (images, video clips) from a Linux-based server running the LAMP stack on a domestic local area network. The client machines can be pretty much anything running a reasonably modern web browser. WACS provides topic and model based indexing, advanced searching, new additions lists, and many other retrieval features. WACS also includes extensive download features allowing your collection of your favourite models' works to be right up to date.
- Web-FTP
- Web-FTP provides quick, easy, and (with an SSL-enhanced Web server) more secure access to your FTP server. Designed with file management in mind, it supports uploads, downloads, and all the usual tasks. No spool directories are used; file transfers are relayed directly from the server to the client and vice versa. Multiple file and recursive directory downloads are supported by generating a tar file on the fly. It can also serve as an FTP client, allowing FTP access to clients behind a firewall. You may view and edit files as well. Web-FTP also has rudimentary CryptoCard support, for CryptoCard protected servers.
- Webfs
- 'webfs' is a simple http server for purely static content. You can use it to serve the content of a ftp server via http for example. It is also nice to export files quickly by starting a http server in a few seconds, without editing a config file first. There is some sendfile emulation code which uses read()+write() and a userland bounce buffer. This lets you compile and use webfs on systems without sendfile(). From version 1.14 on, limited CGI support is available (GET requests only); from version 1.18 on, optional SSL support is available.
- Webpublish
- WebPublish manages the work associated with publishing a local copy of a website to one or more remote servers via FTP, letting website developers concentrate on content. WebPublish knows when changes or additions have been made locally, and only transfers to a server the files and directories that have been added or changed locally. It also knows when files and directories on the server are no longer a part of a local copy, and can be used to to remove those files and directories. It also lets users exclude files and directories from being transferred to or removed from a server.
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