CCleaner

Another obvious one, CCleaner has for many years been the tool of choice for sorting out Windows' registry once it gets confused by game installations and removals and the regular driver updates gaming demands. Its no fuss click and go approach to problem solving enhances its charm.

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Raptr

This cross-game messaging application Raptr is a gaming essential. Not only does it integrate with chat clients like AIM and MSN, but it also hooks into Steam and GfWL to show you what your friends are playing. Now if only Blizzard would stop being so silly and let programs like Raptr hook into Battle.net.

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