I don't know when or why WinUAE forked, but somehow UAE lost momentum (latest stable '98/ experimental '08). Toni added more and more features, so that Richard Drummond decided to port back some of these, which resulted in E-UAE. When Richard ceased support, GnoStic took over and changed the project's name to P-UAE (P for Pandora). All other UAEs are probably forks of either WinUAE or E-UAE.
At least that's how I understand it.
Last edited by gilgamesh; 01 October 2010 at 07:59.
Reason: why or why didn't make sense ;)