Q4M (Queue for MySQL) is a message queue licensed under GPL that works
as a pluggable storage engine of MySQL 5.1, designed to be robust,
fast, flexible.  The development started in late December of 2007, and
although it is very primitive, operates quite swiftly.

Author:	Kazuho Oku at Cybozu Labs, Inc.
WWW:	http://q4m.github.com/