Section 6
- factor · factor a number, generate primes
- fadeplot · draws a waving ribbon following a sinusoidal path.
- fairymax · xboard-compatible chess and chess-variant engine 'Fairy-Max'
- falconseye · play NetHack using a mouse-driven isometric graphical interface
- fanboy · assorted text filters
- fathom · Command-line for probing Syzygy tablebases
- fb.pl · pop up the bubbles
- fc-solve · automated solver for Freecell and related Solitiare variants
- fc-solve-board_gen · Programs to generate boards to be used as input to Freecell Solver.
- fceu · An emulator for the original (8-bit) Nintendo game console.
- fceux · An emulator for the original (8-bit) Nintendo / Famicom game console.
- fceux-net-server · FCE Ultra game server
- ffrenzy · multiplayer platform game with dwarfs fighting with/for food
- ffrenzy-menu · graphical launcher menu for the Feeding Frenzy! game
- fgo · A graphical launcher for FlightGear
- fheroes2 · free remake of the Heroes of Might and Magic II game engine
- fiberlamp · Fiber Optic Lamp
- fifteen · tile manipulation puzzle game
- figlet · display large characters made up of ordinary screen characters
- figlet-figlet · display large characters made up of ordinary screen characters
- figlist · lists figlet fonts and control files
- filler · simple game where two players try to capture half the board
- fillets · puzzle game about witty fish saving the world sokoban style
- filling · puzzle game
- filmleader · screen saver.
- filters · assorted text filters
- fireworkx · pyrotechnic explosions eye-candy.
- fish · play “Go Fish”
- five-or-more · GNOME port of the once-popular Colour Lines game
- fizmo · Z-Machine Interpreter - “Fimzo interprets Z-machine opcodes”
- fizmo-console · bare-bone console implementation of the fizmo Z-Maschine Interpreter.
- fizmo-console-launcher · helper script for launching fizmo-console as zcode-interpreter.
- fizmo-ncursesw · wide-character-ncurses implementation of the fizmo Z-Machine Interpreter.
- fizmo-ncursesw-launcher · helper script for launching fizmo-ncursesw as zcode-interpreter.
- fizmo-sdl2 · SDL2-based implementation of the fizmo Z-Machine Interpreter.
- fizmo-sdl2-launcher · helper script for launching fizmo-sdl2 as zcode-interpreter.
- flame · draw weird cosmic fractals
- flare · action role-playing engine
- flblocks · the fltk block attack! game
- flcheckers · the fltk checkers game
- flight-of-the-amazon-queen · fantasy adventure game
- flipflop · draws a grid of 3D squares that change positions
- flipgame · tile manipulation puzzle game
- flipscreen3d · rotates an image of the screen through 3 dimensions.
- fliptext · draws pages of text whose lines transparently flip around
- floater · free Internet bridge client
- floatert · free Internet bridge client
- flobopuyo · A clone of the Japanese PuyoPuyo game
- flow · strange attractors.
- flpuzzle · the fltk glpuzzle game
- flsudoku · the fltk sudoku game
- fluidballs · the physics of bouncing balls.
- flurry · a colorful particle system
- fluxcore · screen saver.
- flying · pool/snooker/carrom/hockey/curling simulator
- flyingtoasters · 3d space-age jet-powered flying toasters (and toast)
- fofix · Rock Band(tm)-like OpenGL rhythm game
- fontglide · characters float onto the screen to form words
- foobillard · OpenGL billard game
- foobillardplus · 3D OpenGL Billiard Game
- Fortunate · provide wisdom and humor to all
- fortune · print a random, hopefully interesting, adage
- fortune-zh · Chinese Data files for fortune
- four-in-a-row · four-in-a-row game for GNOME
- fprint_demo · simple GTK+ testing libfprint's functions
- freecell-solver-range-parallel-solve · The Freecell Solver utility for solving a range of Microsoft Freecell/Freecell Pro Boards
- freeciv · The Freeciv game (overview)
- freeciv-client · The clients for the Freeciv game
- freeciv-gtk2 · The clients for the Freeciv game
- freeciv-gtk3 · The clients for the Freeciv game
- freeciv-gtk3.22 · The clients for the Freeciv game
- freeciv-gtk4 · The clients for the Freeciv game
- freeciv-manual · Generate HTML or wiki manual for freeciv-server(6)
- freeciv-modpack · Custom content installers for the Freeciv game
- freeciv-mp-cli · Custom content installers for the Freeciv game
- freeciv-mp-gtk3 · Custom content installers for the Freeciv game
- freeciv-mp-gtk4 · Custom content installers for the Freeciv game
- freeciv-mp-qt · Custom content installers for the Freeciv game
- freeciv-qt · The clients for the Freeciv game
- freeciv-ruledit · Freeciv Ruleset Editor
- freeciv-ruleup · Update Freeciv rulesets
- freeciv-sdl · The clients for the Freeciv game
- freeciv-sdl2 · The clients for the Freeciv game
- freeciv-sdl3 · The clients for the Freeciv game
- freeciv-server · The server for the Freeciv game
- freeciv-stub · The clients for the Freeciv game
- freeciv-xaw · The clients for the Freeciv game
- freecol · A free clone of Colonization
- freecraft · Realtime strategy game
- freedink · adventure and role-playing game (engine)
- freedinkedit · adventure and role-playing game (editor)
- freedm · Automatically launch Freedoom with an engine
- freedoom · Open Source Doom-clone
- freedoom1 · Automatically launch Freedoom with an engine
- freedoom2 · Automatically launch Freedoom with an engine
- freedroid · a free Paradroid clone
- freedroidRPG · a futuristic immersive RPG about fighting bots
- freegish · A physics based arcade game
- freeorion · turn-based space empire and galactic conquest game
- freesci · free interpreter for SCI bytecode
- freesci-setup · graphical program to set up you freesci configuration
- freesci-tools · Disassembles all script resources into .script files sciunpack - A tool for unpacking and converting SCI resource data
- freespace2-launcher · launcher for the Freespace 2 Source Code Project
- freesweep · a curses minesweeper-style game
- freetennis · free tennis simulation game
- freevial · trivia platform for community events
- fretsonfire · game of musical skill and fast fingers
- friskserver · An implementation of the classic board game for X11
- frogatto · 2D platformer game starring a quixotic frog
- frotz · interpreter for Infocom and other Z-Machine games
- frozen-bubble · arcade/reflex game
- frozen-bubble-editor · a level editor for Frozen Bubble
- fruit · Fruit is a UCI-only chess engine.
- fudd · assorted text filters
- funguloids · "Those Funny Funguloids!"
- funnyboat · an arcade boat game
- fuzzyflakes · falling snowflakes/flower shapes
- FvwmAudio · the FVWM Audio module
- FvwmAuto · the FVWM auto-raise module
- FvwmBacker · the FVWM background changer module
- FvwmBanner · the FVWM Banner
- FvwmButtons · the FVWM buttonbox module
- FvwmConsole · the FVWM command input interface
- FvwmCpp · the FVWM Cpp pre-processor
- FvwmDebug · the FVWM module debugger
- FvwmForm · input form module for Fvwm
- FvwmIconBox · the FVWM iconbox module
- FvwmIconMan · an Fvwm Icon Manager
- FvwmIdent · the FVWM identify-window module
- FvwmM4 · the FVWM M4 pre-processor
- FvwmPager · the FVWM Pager module
- FvwmSave · the FVWM desktop-layout saving module
- FvwmSaveDesk · another FVWM desktop-layout saving module
- FvwmScroll · the FVWM scroll-bar module
- FvwmTalk · the FVWM command line interface
- FvwmTaskBar · the FVWM taskbar module
- FvwmWinList · the FVWM window list module