agistudio

QT AGI Studio allows you to view, create and edit AGI games

atlas

Chart Program to use with Flightgear Flight Simulator

beat

bennugd

biounzip

Unpacks BioZip archives

blackchocobo

bps

bsp

BSP nodebuilder for DooM engine games.

catcodec

Decode and encodes sample catalog for OpenTTD

copstation

datutil

Converter for dat files for Rom Managers

ddfinwad

deltapatcher

desurium

desurium-meta

deutex

A wad composer for Doom, Heretic, Hexen and Strife

dfhack

dwarftherapist

dzip

compressor/uncompressor for demo recordings from id's Quake

etswitch

A 'minimizer' for a few games

fgcom

flobby

fteqcc

QC compiler

fteqcc-xonotic

gamecheater

a game cheater for GNU/Linux that uses ptrace system call to edit processes' memory

gamepick

Launch opengl games with custom graphic settings

ggencoder

glbsp

A node builder specially designed for OpenGL ports of the DOOM game engine

glvis

PVS (Potentially Visible Set) builder designed to be used with OpenGL ports of the DOOM game engine.

gogonlinux

gpclient

Unofficial client for GamePark.cz server

grfcodec

OpenTTD GRF Codec

grotesque

gslist

A GameSpy server browser

gtkevemon

hearse

exchange Nethack bones files with other players

higan-purify

hmap2

Maps compiler with colored lighting and lots of other features.

ips

joystick

joystick testing utilities

lgogdownloader

linux-wbfs-manager

WBFS manager for Linux using GTK+

loki_patch

Loki Software binary patch tool

loki_setupdb

magicseteditor

massacre-data

mattricks

Hattrick Manager

minutor

nesutils

nf

nforenum

Check OpenTTD NFO for errors

nml

nsrt-bin

nsrt-frontend

openquartz-utils

Utils for PAK creation

osavul

par

pbsetup

Updating PunkBuster

playonlinux

pr-downloader

purify

pyfa

pyrocket

qgamex

Launch your games in a separate X11 session with many options

qjoypad

translate gamepad/joystick input into key strokes/mouse actions in X

qstat

Server statics collector supporting many FPS games

qtlobby

Qt-Lobby

qtsixa

quickbms

rejoystick

Program which translates gamepad/joystick input into key strokes/mouse actions in X

rubygfe

RubyGFE -- A Game File Extractor

searchtool

server browser for Internet games

smithy

A map editor for AlephOne

snespurify

spring-installer

Easy content installation

springlobby

lobby client for spring rts engine

steam

steam-base

steam-client-meta

steam-games-meta

steam-installer

steam-launcher

steam-meta

taxidraw

a taxiway editor for FlightGear and X-Plane

terragear

terragear-cs

tsukuyomi

A reference utility for creating and applying UPS patches

tyrutils

light, vis, bspinfo, bsputil and qbsp tools for quake by tyrquake author

ucon64

The backup tool and wonderful emulator's Swiss Army knife program

uglygs

quickly searches the network for game servers

umark

umodpack

portable and useful [un]packer for Unreal Tournament's Umod files

upset

A utility for applying UPS patches

uz2unpack

UZ2 Decompressor for UT2003/UT2004

vispatch

WaterVIS utility for glquake

whdrunner

wiiload

load homebrew apps over the network to your Wii

wiithon

WBFS Partition Manager

wiiuse

Library written in C that communicates with several Nintendo Wii remotes

wxchtdecoder

A program to decode .CHT files in Snes9x and ZSNES to plain text

xboxdrv

Userspace Xbox 360 Controller driver

xboxgw

Tunnels XBox system link games over the net

xgame

Run games in a separate X session

xgame-gtk2

Run games in a separate X session

xgamer

A launcher for starting games in a second X session

xqf

A server browser for many FPS games (frontend for qstat)

xwadtools

zennode

A nodebuilder and REJECT builder for DooM engine games

ziptool

agistudio

hmap2

snespurify

atlas

ips

spring-installer

beat

joystick

springlobby

bennugd

lgogdownloader

steam

biounzip

linux-wbfs-manager

steam-base

blackchocobo

loki_patch

steam-client-meta

bps

loki_setupdb

steam-games-meta

bsp

magicseteditor

steam-installer

catcodec

massacre-data

steam-launcher

copstation

mattricks

steam-meta

datutil

minutor

taxidraw

ddfinwad

nesutils

terragear

deltapatcher

nf

terragear-cs

desurium

nforenum

tsukuyomi

desurium-meta

nml

tyrutils

deutex

nsrt-bin

ucon64

dfhack

nsrt-frontend

uglygs

dwarftherapist

openquartz-utils

umark

dzip

osavul

umodpack

etswitch

par

upset

fgcom

pbsetup

uz2unpack

flobby

playonlinux

vispatch

fteqcc

pr-downloader

whdrunner

fteqcc-xonotic

purify

wiiload

gamecheater

pyfa

wiithon

gamepick

pyrocket

wiiuse

ggencoder

qgamex

wxchtdecoder

glbsp

qjoypad

xboxdrv

glvis

qstat

xboxgw

gogonlinux

qtlobby

xgame

gpclient

qtsixa

xgame-gtk2

grfcodec

quickbms

xgamer

grotesque

rejoystick

xqf

gslist

rubygfe

xwadtools

gtkevemon

searchtool

zennode

hearse

smithy

ziptool

higan-purify