On my site (svgames.pl) I have a few projects using SDL1, that is:
- Alexland, a 2D shooter a'la Crimsonland
- platformer, a, well, platformer game (not really finished, got stuck at demo)
- Colorful, a simple game originally made in 48h for Ludum Dare (+source)
- Puzelki, a simple puzzle game

Right now I have some projects using SDL2 underway, but I prefer not to talk too much about them until I'm quite certain I'll be able to finish & deliver.