BlueHarvest
- Cleans your volumes of junk files created by Finder.
App Tamer
- Slow down or pause your apps when you're not using them.
Split&Concat
- Split&Concat is a useful program that allows you to split and concat files.
MacHacha
- Utility to split and join files using several common cross-platform formats (Mac, Unix, Windows), such as hjsplit, hacha, fastsplit or winsplit.