Qscanq scans every email message submitted to qmail before allowing it to be added to qmail's mail queue. Infected emails are rejected, not bounced, so you won't have to deal with double-bounces during virus outbreaks.
sud is a daemon to execute interactive and non-interactive processes with special (and customizable) privileges in a nosuid environment It is based on a client/server model and on the ability to pass file descriptors between processes.
Originating from the Panultima Endeffect, sushiX is the reincarnation of their future Ultima Online Shard software. While sushiX is not usable for a general audience yet, sunshine as the Panultima Endeffect's current software is made available.
UCAS or Universal Central Admin System.Client to Server API system for administrating Unix/Linux/BSD systems that allows a quick and effective method for keeping control of all your servers in one central system.
computer simulation techniques
Implementation of computer simulation techniques like Markov Chain Monte Carlo.
computational renormalization group
YoSpin is a computational renormalization group.