SDelete - Securely overwrite your sensitive files and cleanse your free space of previously deleted files using this DoD-compliant secure delete program.
Mem Reduct - Mem Reduct is a small application that allows you to monitor and clean your computers memory.
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
CleanMem - CleanMem keeps memory use in check on the system without the memory being pushed to the page file.
Clean Master - Some users swear by it, some call it a glorified snake oil that does more harm than good. That can be said about any snake oil, but what specific brand of snake oil can boast almost a billion downloads around the world?
Memory Cleaner X - Memory Cleaner X cleans inactive RAM from your computer that allows you to have more applications...