For the last years, Andy Tai has been maintaining the Softwar Wars map. It colorfully describes the evolution of the battle between Microsoft (at the middle) and the others companies or movements.
This map is regularly updated and gives quite an informative status of the situation, including the problems occuring between the "Allied Forces". You can find this map at http://www.atai.org/softwarewar.gif
The previous maps are on http://www.atai.org