acc

aseprite

aseprite-skia

cardpics

set of free cards sets

cegui

Crazy Eddie's GUI System

cheapglk

clanlib

multi-platform game development library

clunk

entityx

fareditor

flatzebra

A generic game engine for 2D double-buffering animation

freecell-solver

garglk

glk-headers

glkloader

glkterm

glktermw

gnome-inform7

goatee

godot

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

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

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

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

pypoker-eval

quake4-sdk

Quake4 SDK

raknet

raknet-tes3mp

readdol

sdlu

simgear

Development library for simulation games

slade

snesfilter

snesreader

supergameboy

surgescript

t4k-common

tiled

unity

unity-android

unity-doc

unity-facebook

unity-ios

unity-mac

unity-webgl

unity-windows

unityhub

wfmath

Worldforge math library

zdbsp

acc

higan-ananke

raknet-tes3mp

aseprite

irrlicht

readdol

aseprite-skia

KXL

sdlu

cardpics

libmaitretarot

simgear

cegui

libmt_client

slade

cheapglk

libnw

snesfilter

clanlib

libtcod

snesreader

clunk

mercator

supergameboy

entityx

mygui

surgescript

fareditor

netradiant

t4k-common

flatzebra

newton

tiled

freecell-solver

ode

unity

garglk

ogre

unity-android

glk-headers

ois

unity-doc

glkloader

openscenegraph

unity-facebook

glkterm

openscenegraph-qt

unity-ios

glktermw

paklib

unity-mac

gnome-inform7

physfs

unity-webgl

goatee

poker-eval

unity-windows

godot

ps2-packer

unityhub

guichan

pypoker-eval

wfmath

hawknl

quake4-sdk

zdbsp

hdl_dump

raknet