acc

aseprite

bsnes-c++98-libretro

bsnes-libretro

cardpics

set of free cards sets

cegui

Crazy Eddie's GUI System

cheapglk

clanlib

multi-platform game development library

crystalspace

Portable 3D Game Development Kit written in C++

easyrpg-editor

etrophy

fareditor

flatzebra

A generic game engine for 2D double-buffering animation

flinker

GBA cart writing utility by Jeff Frohwein

garglk

glk-headers

glkloader

glkterm

glktermw

gnome-inform7

goatee

godot

gtkradiant

FPS level editor

guichan

a portable C++ GUI library designed for games using Allegro, SDL and/or OpenGL

hawknl

A cross-platform network library designed for games

hdl_dump

game installer for playstation 2 HD Loader

higan-ananke

hlsdk

Half-Life Software Development Kit for mod authors

irrlicht

open source high performance realtime 3D engine written in C++

KXL

Development Library for making games for X

libmaitretarot

backend library for the maitretarot games

libmt_client

backend library for the maitretarot clients

libnw

Tools and libraries for NWN file manipulation

libtcod

libtuxcap

mcedit

mercator

WorldForge library primarily aimed at terrain.

mygui

netradiant

newton

an integrated solution for real time simulation of physics environments

ode

Open Dynamics Engine SDK

ogre

Object-oriented Graphics Rendering Engine

ogreal

ois

Object-oriented Input System - A cross-platform C++ input handling library

openscenegraph

Open source high performance 3D graphics toolkit

openscenegraph-qt

paklib

library for accessing Quake pak files

physfs

Abstraction layer for filesystem and archive access

poker-eval

A fast C library for evaluating poker hands

ps2-packer

another ELF packer for the PS2

pyogre

pypoker-eval

quake4-sdk

Quake4 SDK

raknet

raknet-tes3mp

readdol

sdlu

simgear

Development library for simulation games

slade

snesfilter

snesreader

steamvr-osvr

supergameboy

t4k-common

tiled

vamos

an automotive simulation framework

wfmath

Worldforge math library

zdbsp

acc

guichan

paklib

aseprite

hawknl

physfs

bsnes-c++98-libretro

hdl_dump

poker-eval

bsnes-libretro

higan-ananke

ps2-packer

cardpics

hlsdk

pyogre

cegui

irrlicht

pypoker-eval

cheapglk

KXL

quake4-sdk

clanlib

libmaitretarot

raknet

crystalspace

libmt_client

raknet-tes3mp

easyrpg-editor

libnw

readdol

etrophy

libtcod

sdlu

fareditor

libtuxcap

simgear

flatzebra

mcedit

slade

flinker

mercator

snesfilter

garglk

mygui

snesreader

glk-headers

netradiant

steamvr-osvr

glkloader

newton

supergameboy

glkterm

ode

t4k-common

glktermw

ogre

tiled

gnome-inform7

ogreal

vamos

goatee

ois

wfmath

godot

openscenegraph

zdbsp

gtkradiant

openscenegraph-qt