Xslimmer - Your Mac on a Diet With Xslimmer - Universal Application Slimmer for Mac OS X 10.3 and up.
CleanMyMac X - Clean, protect and speed up your Mac
ZEEEN - A beautiful iPhone app for browsing Dribbble
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Outbyte - Outbyte is a cmprehenmsive computer repair tool that is built to address a range of various system issues like clean up your drive, optimize performance and enhance privacy or security.
MacCleaner Pro - MacCleaner Pro is a bundle of 6 apps to clean up disk space and speed up Mac.