Looks like it is the newest one ... here is the link to the homepage ... and here is the link to the main libSDL website.
Yes, SDL is quite cool. I noticed the book "Data Structures for Game Programmers" (good read) makes use of it for the examples. The author explains why: if he used DirectX, the examples would have been much longer. Of couse he doesn't mention that his code now also much more portable.
One of these days I'll have try them out on AmigaOS.
Zoltan
