Microbrew MicroSieve is designed to be a high speed spam filter for USENET news. Given the large amount of spam riding around in major USENET news systems, a spam filter has to be very fast and remain effective. It checks for duplicate and large articles, spambots, and binaries in non-binary groups. It also has path-based auto-accept and auto-reject, as well as cross-post limiting.
Microbrew Message Center is designed to be an immensely scalable mail platform supporting multiple users, multiple domains, and multiple mail servers. It is akin to iPlanet or post.office but is not as complex and uses open source software to perform mundane services such as Web and mail services.
md5sha1sum provides md5sum, sha1sum, and ripemd160sum tools that are intended to be drop in replacements for those in GNU textutils. Since installing textutils is somewhat excessive for just these utilities, they are meant to be a more compact and easier to install alternative. This is useful on systems such as Solaris or Mac OS X where most of the tools from textutils are already provided by the vendor.