Guide to Game Development Frameworks and libraries

Guide to Game development frameworks and libraries. What is there about free Game Development Frameworks and libraries?

Advanced or basic is about how specialized it is. More the library is basic (like SDL) or maybe very advanced, like libraries for Real time strategy games...

advanced 3D computer games

 * crystalspace3d (and here)
 * GNU 3D kit
 * interreality
 * Open Source Graph
 * NeL

general advanced frameworks (2D/3D/sound,etc)

 * clanLIB
 * Boost
 * QT

basic

 * SDL
 * allegro
 * plib

basic not always game-specific

 * GGI and KGI
 * directFB

Python specific

 * pygame

listing sites

 * thefreecountry
 * 3d engines list
 * game creation resources
 * freebyte's guide to free programming

Less related

 * here - to move maybe to other howtos in the future?