[[Interface::frontend]]

Bibliogram: Bibliogram works without browser JavaScript, has no ads or tracking, and shows no pop-up that prevents you to view content without an account. It is inspired by Invidious. A list of available instances can be found here. See Bibliogram-specific and Instagram-related features here.

Bitcoin-Qt: Bitcoin-Qt is a multiplatform bitcoin client and wallet. Bitcoin is a network and a currency establishing a PKI for electronic cash transactions which is distributed P2P. To quote the developers, "Bitcoin is a decentralized P2P electronic cash system without a central server or trusted parties. Users hold the crypto keys to their own money and transact directly with each other, with the help of the network to check for double-spending."

Cacti: 'Cacti' is a frontend to RRDTool. It stores all of the necessary information to create graphs and populate them with data in a MySQL database. The frontend is completely PHP driven. Along with being able to maintain graphs, data sources, and round robin archives in a database, Cacti also handles the data gathering. There is SNMP support for those used to creating traffic graphs with MRTG.

Calamares: Calamares is a distribution-independent system installer, with an advanced partitioning feature for both manual and automated partitioning operations. It is the first installer with an automated “Replace Partition” option, which makes it easy to reuse a partition over and over for distribution testing. Calamares is designed to be customized by distribution maintainers without need for cumbersome patching, thanks to third party branding and external modules support.

Candela: Candela is a simple shell-building system that uses python and curses to help developers create customized command line interfaces. It has a simple interface, is well documented, and allows developers to take command-based tools to the next level of complexity and usability. Features Commands are 100% python and can run aribtrary code Commands can run code in secondary threads for asynchronous operation Customizable tab completion hooks for command arguments Customizable key event callbacks for reacting to each keypress event Responsive layout for smaller terminals Numerous built-in command templates Simple command syntax and help system "stickers" allow persistent information display Automatically generated command validation Up/Down arrows cycle through history Copy/Paste, insert text mode Easy transitions between menus Supports both named and positional command arguments

CoaSim-gui: 'CoaSim-gui' is a graphical use interface for the coalescence process simulator CoaSIm.

Common Desktop Environment: The Common Desktop Environment was created by a collaboration of Sun, HP, IBM, DEC, SCO, Fujitsu and Hitachi. Used on a selection of commercial UNIXs, it is now available as free software for the first time.

CubicSDR: CubicSDR "allows you to navigate the radio spectrum and demodulate any signals you might discover" utilizing a modular 'piping' architecture that simplifies real-time analysis of discovered signals. CubicSDR creates live "waterfall" visual graphs representing a spectrum bandwidth and associated signal intensity.

CvsWeb: 'cvsweb' is a Web interface for accessing a CVS repository. This is an enhanced cvsweb developed by Henner Zeller. Enhancements include recognition and display of popular mime-types, visual, color-coded, side by side diffs of changes and the ability sort the file display and to hide old files from view. One living example of the enhanced cvsweb is the KDE cvsweb. cvsweb requires the server to have CVS and a CVS repository.

Degate: Degate is a tool that aids VLSI- reverse engineering of digital logic in integrated circuits (ICs). Degate helps you to explore layered images from ICs. It matches standard cells on the imagery given by graphical templates and to some degree degate matches vias and wires and assists you in tracing circuit paths and in reconstructing the net list. Degate is not a completely automatic analyzing tool. Degate helps you with some automation in your manual chip reverse engineering process.

Dictem: DictEm is a Dictionary protocol client for GNU Emacs.

Docassemble: docassemble is a system for guided interviews and document assembly. It provides a web application that conducts interviews with users. After each interview, docassemble generates documents in various formats based on user input and preconfigured templates. Though the name emphasizes the document assembly feature, docassemble interviews do not need to assemble a document; they might submit an application, direct the user to other resources on the internet, store user input, interact with APIs, or simply provide the user with information. docassemble was created by a lawyer/computer programmer for purposes of automating the practice of law, but it is a general-purpose platform that can find applications in a variety of fields.

Efax-GTK: Efax-gtk is a graphical frontend for the 'efax' fax program. It interfaces with efax directly, replacing the scripts supplied with 'efax.' It receives and sends faxes; you can also use it to view, print, and manage faxes that have already been received.

Epeios: The purpose of this project was to develop a framework to make powerful, reliable software components that could be used whatever the target platform, the environment or the interface in use. The project source code currently contains useful applications and undocumented related libraries. Among all the software components available, there is, for example, MMUAq, an application which allows to handle several mail accounts as a global one. As each one, it is based on the Epeios framework.

Erw: ERW (Entities and Relationships on the Web) is an innovative system for handling complex databases using a Web browser. It uses the most recent standards endorsed by the W3C to offer to the user a sophisticated environment, similar to a dedicated client. Moreover, the user interface is generated in a completely automatic way starting from a conceptual description of the database by means of an XML-based description language for entity-relationship schemata. From the same description, you can also automatically obtain diagrams and documentation. ERW can be used for content management, in particular when the data is structured along complex relations.

FUSBi: FUSBi, the Free USB Installer, downloads free GNU/Linux Distributions for you and creates bootable USB images. FUSBi supports automated installation of of all the FSF-endorsed Free Software GNU/Linux Distributions, such as gNewSense, UTUTO, Dynebolic, Musix GNU+Linux, BLAG and GNUstep. You can also use it with your local image files. FUSBi is a Free Software itself and is licensed under GNU General Public License version 3 or later.

FXRuby: 'FXRuby' is a Ruby extension module that provides an interface to the FOX GUI toolkit.

FbNotex: fbNotex is a free software for macOS useful to manage many textual notes in Markdown format, files and tasks using the Firebird database.

Fldiff: 'fldiff' is a graphical diff program that shows the differences between two files/directories, or a file/directory and a CVS or Subversion repository. It is inspired by xdiff (Motif-based) and xxdiff (Qt-based), whose choice of GUI toolkit has hampered their portability to many of the systems.

FlightGear

FlightGear Flight Simulator (often shortened to FlightGear or FGFS) is a free, open-source, multi-platform, flight simulator, created by volunteers. FlightGear is an atmospheric and orbital flight simulator used in aerospace research and industry. Its flight dynamics engine (JSBSim) is used in a 2015 NASA benchmark to judge new simulation code to the standards of the space industry. FlightGear 2020.3 has 700+ aircraft in launcher with 1-click install and update, that can be filtered by advancement level in flight dynamics model (FDM), systems, or art. The rest are available through 3rd party hangars or from development repositories. Broad overview of features as of 2020: 3d buildings & roads for entire planet based on OpenStreetMap (OSM) data and automatic generation, terrain-driven weather simulation, addons, multiplayer environment, orbital rendering, a flexible and open aircraft modelling system, varied networking and interfacing options, multiple display support, multiple flight dynamics engines, multiple rendering pipelines, detailed weather visualisation with ALS renderer, a powerful scripting language, and other features suited for settings in research, industry, DiY projects, and desktop simulation, combined with an open architecture. Used professionally, as well as non-professionally. Platforms: Windows, GNU/Linux, Mac, FreeBSD, others. Compiles for ARM processors, including Raspberry Pi. See:

Applications and usages
Tours
News
Info, help, and contribution: wiki, forum, mailing list
Quick aircraft recommendations - see screenshots and caption text in install aircraft page

Professional and Educational usages The FlightGear project has been used in a range of projects in research and industry, including by NASA for both Earth and Mars conditions (e.g. in ARES glider design for Mars^[1]. It has been used as a research and development platform by various agencies and universities. Other than aerospace research and development, FlightGear is used in aviation or aviation-adjacent industries in various ways. For example, teaching student pilots procedures or handling in a simulator saving expensive flight time - e.g. FlightGear is integrated into various FAA certified training simulators^[2], in contrast to use in full-motion (6-DoF) research simulators like at the University of Naples^[3] where FlightGear is utilised for physics not just used for visualisation/interface. Similarly, FlightGear has been used to teach air traffic controllers (ATC)^[4] and allows for dedicated ATC client/instructor interfaces as well as visuals using real-life ATC tools like binoculars or cameras - teachers can alter traffic, weather, re-create traffic patterns, and so on. Different forms of instructor stations are possible for different areas of instruction. FlightGear has also been used in general education e.g. exhibits in museums^[5] and all sorts of DiY projects. About the project The simulator is created by an international group of volunteers, and released as free, open-source GPL software. The goal of the FlightGear project is to create a sophisticated and open flight simulator framework for use in research or academic environments, pilot training, as an industry engineering tool, for DIY-ers to pursue their favorite interesting flight simulation idea, and last but certainly not least as a fun, realistic, and challenging desktop flight simulator. Being free software, FlightGear has historically received development from the science and engineering community. Many contributors have had an academic background in engineering, maths, physics, or computer-science - in addition to some involvement or interest in aviation like being pilots (hobby, professional, test pilots, or retired). This is true especially among long-term contributors, and the academic insight has shaped the project's simulation standards.^[6] There are many exciting possibilities for an open, free flight sim. It is hoped that this project will be interesting and useful to many people in many areas. History FlightGear started as an online proposal in 1996 by David Murr, living in the United States. He was dissatisfied with proprietary, available, simulators citing motivations of companies not aligning with the simulators' users, and proposed a new flight simulator developed by volunteers over the Internet.^[7] Development of an OpenGL based version was spearheaded by Curtis Olson starting in 1997. FlightGear incorporated other open-source resources, including the LaRCsim flight dynamics engine from NASA, and freely available elevation data. The first working binaries using OpenGL came out in 1997. By 1999 FlightGear had replaced LaRCsim with JSBSim built to the sims' needs, and in 2015 NASA used JSBSim alongside 6 other space industry standards to create a measuring stick to judge future space industry simulation code. The FlightGear project has been nominated by SourceForge, and subsequently chosen as project of the month by the community, in 2015, 2017, and 2019.^[8] ^[9] ^[10]

Free Oberon: Free Oberon is a cross-platform IDE for development in Oberon programming language made in the classical FreePascal-like pseudo-graphic style. Compilation of user-written programs is performed using the Vishap Oberon Compiler and then GCC. The compiled console programs can be run in the built-in terminal emulator.

Freebeltane: Beltane v1 was distributed under the GPL. Unfortunately, its authors have decided to distribute Beltane v2 under a non-free license (no redistribution), and their web pages prominently mention v2. Thus, this project starts with Beltane v1, and sticks to free software references. Samhain, the package for which it is a frontend, remains free. As of November 12, 2004, this project has no maintainer. Please email (karl@gnu.org) if you are interested in becoming the maintainer; the original authors appear to be making only occasional bug fixes to v1 at this point.

GNumExp: 'gNumExp' is a GUI frontend to NumExp, a math-oriented programming language. It provides a graphic console with integrated help system, and a powerful function plotter.

GRot13: A GUI interface to rot13 (a common type of encryption) with cut & paste features. Useful if your browser doesn`t support rot13 or if its support is only for reading.

Gamja: gamja is an IRC web client. It can work together with soju.

Gargoyle: Gargoyle is an IF player that supports all the major interactive fiction formats. Most interactive fiction is distributed as portable game files. These portable game files come in many formats. In the past, you used to have to download a separate player (interpreter) for each format of IF you wanted to play. Gargoyle is based on the standard interpreters for the formats it supports. Gargoyle is free software released under the terms of the GNU General Public License.

Gcompressor: 'Gcompressor' is a GUI frontend for various decompression tools. It can compress/decompress files and add or remove them from an archive, edit or selectively restore the contents of a file in an archive, or start up the appropriate applications for a file of a certain MIME type (ie if a file is an mp3, gcompressor wil launch mpg123.

Gequel: 'GEQUEL' is a GTK-based frontend for MySQL. It was loosely derived from an old program by the same author (xsqlmenu). It retrieves data from MySQL databases, presents them in nice browsers, and lets users do update, delete, insert, search, query, and copy operations.

Getgui: This is a candidate for deletion: From website "Getgui is retired and no longer available". Poppy-one (talk) 15:07, 31 July 2018 (EDT) 'GETGUI' is a standalone X11 utility that can be used to easily add a degree of graphical user interface functionality to shell scripts or other programs. It can display informational messages and progress messages, or it can be used to get user input via dialog boxes, keyboard input fields, pulldown menus, or select boxes. "Wizard"-type procedural interfaces can be implemented using a series of getgui invocations.

Gitg: Gitg is a graphical user interface for Git.

Gksu: GKSu is a library that provides a Gtk+ frontend to su and sudo. It supports login shells and preserving environment when acting as a su frontend. It is useful to menu items or other graphical programs that need to ask a user's password to run another program as another user.

Gman: Gman is a user-friendly graphical front end for the man system mostly designed for the new users of GNU/Linux. It can help a newbie find specific information or browse other man pages. It is particularly useful as a replacement for xman. Gman's most basic job is to build a database for all the man pages and display them (or part of them) as a list. When the user decides to read a specific man page, gman will launch a xterm window and call the traditional man system to display the man page in the window.

GnoRPM: 'GnomeRPM' is a graphical front end to the Redhat package management system. It is similar to Redhat's Glint, but doesn't call the rpm executable for installs, which means that it is faster, and the interface should be more responsive. It also has rpmfind functionality, so you get the RPM best suited to your system as well as all the RPMs it depends on that you don't have.

Gnomba: Gnomba is a GUI machine and share browser for the smb protocol. It lets you to scan any number of subnets for machines with smb (samba). The workgroups, machines and share are shown in a tree-view. For each machine you can then view the list of shares, and mount, unmount or browse them.

Gnugo.el: This package provides an Emacs based interface for GNU Go. It has a graphical mode where the board and stones are drawn using XPM images and supports the use of a mouse.

Gossip-nostr-client: Gossip is a GUI client that allows users to post microblogs, follow other users, and host private chats using Nostr. It is very snappy and performant as it is written in Rust. It is highly configurable; there are 64 configuration options. Unlike other Nostr clients, Gossip strives to avoid web browser technologies like JavaScript to reduce bloat.

Gparted: GParted is a GNOME partition editor for creating, reorganizing, and deleting disk partitions. It uses libparted from the parted project to detect and manipulate partition tables. Optional file system tools permit managing file systems not included in libparted.

Grig: 'Grig' is a graphical user interface for the Ham Radio Control Libraries. It is simple and generic, presenting the same interface to the user regardless of which radio he or she uses.

Grotesque: Grotesque is a utility that helps you manage your collection of interactive fiction, or text adventures. It collects bibliographic and other information from story files and presents a convenient interface to build and organize a catalog of your games. It supports all file formats covered by the Treaty of Babel for extracting metadata from story files and for detecting interpreters, but you can define your own formats with their own associated interpreters. You may manually add metadata for any file but the program can also fetch metadata information and cover art from the IFDB. You can easily browse large collections of interactive fiction by quickly filtering by author, group, year of publication, genre, forgiveness or rating. Grotesque also keeps track of which stories you’ve played and which are new. Finally, it displays a story’s metadata and cover art in an attractive GTK-based interface.

GtkLP for CUPS 2: GTK LP for CUPS is a frontend for the lpr that comes with CUPS. It is written to make it easy to use nearly all the options from CUPS without knowing them by name. For print-admins, there is also an pretty simple queue tool implemented. The latest release supports both GTK 1 and GTK 2.

Gxmessage: Gxmessage opens a pop-up window to display a message obtained from the command-line, from a file, or from stdin. The window can include a row of user-defined buttons, each of which causes the program to exit with a different return code.

Honeycomb: Honeycomb is an object-oriented hover intent library. A lot of hover intent libraries give you a single in-point for invoking hover functionality, assuming you will always want action to take place on hover in and hover out. This can allow for fairly light weight libraries but can be very difficult to work with if you need any customization. If you have use cases for hover intent that aren't always straight forward, Honeycomb may be a good fit for you.

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

Invizi: Invizi helps you track your cryptocurrency transactions. All your data is stored locally, encrypted and never leaves your computer. Invizi can calculate your profit and loss, your historical balance, your assets allocations and more. Your transactions can be automatically synchronized with exchanges, entered manually or imported via csv files.

Iwgtk: iwgtk is a wireless networking GUI for GNU/Linux. It is a front-end for iwd, with supported functionality similar to that of iwctl. Features include viewing and connecting to available networks, managing known networks, provisioning new networks via WPS or Wi-Fi Easy Connect, and an indicator (tray) icon displaying connection status and signal strength.

Json-Type: Json-Type is a fully-compliant RFC 8259 and ECMA 404 push parser -- validating UTF8 as per the Unicode Standard 8.0.0 -- and a very efficient on-the-fly type checker of JSON text. Json-Type has a two-tiered structure: the core of its functionality is enclosed in a dynamic library, while the front-end, the main program assembles the variety of use-cases of the library into a convenient and comprehensive command line interface.

Jump Cutter Browser Extension: Skips silent parts in videos, in real time. Can be useful for watching lectures and other unedited videos.

Kdbg: KDbg is a graphical user interface to gdb, the GNU debugger. It provides an intuitive interface for setting breakpoints, inspecting variables, and stepping through code.

Knetfilter: Knetfilter is a KDE frontend to iptables. It is used with Linux 2.4 to manage the functionality of netfilter. Knetfilter lets you set up most common firewall configurations, as well as perform more sophisticated management of a complex firewall. It is also possible to use an integrated interface to tcpdump and nmap.

Lgogd uri: A streamlined PyGTK GUI which allows LGOGDownloader to act as a URI handler for the gogdownloader:// URIs employed by GOG.com to trigger their Windows and MacOS downloader clients. Perfect for anyone who wants a comfortable way to download their legally purchased resources for ScummVM, GemRB, etc. onto a system that runs only free software. Requires LGOGDownloader 2.22 or newer to download extras.

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