Windows: PC maintenance tasks can be difficult and boring, but if you use Glary Utilities Portable you'll find they're easier than it seems. This great app features all the tools you need to repair, clean, tweak and optimize you system in a portable, pocket-sized version that doesn't require installation and can run from a USB device.

Blackberry: If you're looking for a new game to get addicted to on your Blackberry then give Color Lines a shot. The object of the game is to remove balls from the board by arranging a horizontal or vertical line of five or more balls of the same color. Rumor has it that Color Lines is now even more popular than Tetris in Russia, though this could just be marketing spiel.

Mac: uTorrent may now have arrived for Mac but don't forget that Transmission is a free, lightweight BitTorrent client. It features a simple, intuitive interface on top of an efficient, cross-platform back-end. If you don't want to get lost in statistics and don't want your bit torrent client hogging your Mac's resources it's an excellent choice.