Luz is a GPL IRC Services. It's purpose is to offer a quality free software product, instead of the closed source available ones. It's designed mainly -but not limited to- for ircu based ircd's.
Simple script of backup using tar for *NIX systems and written in bash, very easy to suit whatever backup policy, using complete, incremental or parcial backups. It has some features for esample mail notification, index of files, error notices, etc.