MemFree clears space in your computer's RAM by forcing data from your RAM onto your Hard Drive. This leaves a large space in your memory for any new program's to load into. You can set MemFree to Optimize when the total available RAM is below a limit, MemFree can start minimized in the system tray and you can optimize from the command line. MemFree has now been completely rewritten in C++ to be faster and smaller.