Using gravity, dominoes, bowling balls (and other balls), ramps, balloons and cola bottles primed with Mentos, The Butterfly Effect invites you to solve physics puzzles and knock over the bowling pin at the end. In case you get stuck, the friendly Post-it Boy has left his clues where they might come in handy. This game is not entirely unlike the famous game "The Incredible Machine".
(Qt)-Backstep.py is commandline and graphical (Qt) backup software written in pure Python. It can back up any directory to CD-R(W), DVD-R(W), USB key, or another directory. It is a continuous backup solution. It works like a time machine. It contains a backup network server. It can send backups over the Internet or your network.