Raku, A game where you need to program a robot and make through 2D mazes and make pictures:D (With red,blue and green rocks). You will need to make algorithms and sort out, how to make it out. There is Game of Life to.
It's very personal to me :D
a web based app, built for select people for a specific job
puzzle
morse code TV
This is my very own OS that can be run in the web!