MUNGE (MUNGE Uid 'N' Gid Emporium) is an authentication service for creating and validating credentials. It is designed to be highly scalable for use in an HPC cluster environment. It allows a process to authenticate the UID and GID of another local or remote process within a group of hosts having common users and groups. These hosts form a security realm that is defined by a shared cryptographic key. Clients within this security realm can create and validate credentials without the use of root privileges, reserved ports, or platform-specific methods.
MUTE File Sharing is an anonymous, decentralized search-and-download file sharing system. Several people have described MUTE as the "third generation file sharing network" (From Napster to Gnutella to MUTE, with each generation getting less centralized and more anonymous). MUTE uses algorithms inspired by ant behavior to route all messages, include file transfers, through a mesh network of neighbor connections.
MailStripper Pro is a mail scanner that aims to remove spam and viruses from incoming mail. It recognises and decodes many obfuscation techniques used by spammers and uses several different mechanisms to recognise spam which are immune to Bayes poisoning, and has achieved real-world success of over 99.8%. It is MTA-independent and does not implant itself into your mail server. Instead, it functions as a proxy, allowing the MTA to reside on a different server.
Malheur is a tool for the automatic analysis of malware behavior (program behavior recorded from malicious software in a sandbox environment). It is designed to support the regular analysis of malicious software and the development of detection and defense measures. It allows for identifying novel classes of malware with similar behavior and assigning unknown malware to discovered classes. It can be applied to recorded program behavior of various formats as long as monitored events are separated by delimiter symbols, e.g. as in reports generated by the popular malware sandboxes CWSandbox, Anubis, Norman Sandbox, and Joebox.