MIDAS is a cross platform Monitoring and NIDS server. The goal of this project is to build a robust and complete network/system monitoring suite that is capable of scaling to very large networks.
With the new 2.2a version, we have created a client for monitoring Win32 based systems, but the core of the application is still made for *NIX systems.
Mbfree allocates and frees a given amount of memory. It is especially helpful on systems that are over utilized that swap a lot. A lot of OSs loose performance when their main memory is used and the OS is swapping. Mbfree allows you to allocate a certain amount of memory and free it. In Linux the result is usually faster loading of programs -- or successful loading of programs when they don't load because there is not enough free memory.