LabWiki is a simple, XHTML/CSS standard-compliant, wiki software written in PHP. It uses plain text files for storing data (instead of a database such as MySQL). The wiki is easy to setup, use and customize. Among its features are auto-backups of previous versions of a page, backup trimming, restoring from backups, IP-based and/or login-based editing restriction, password protection of pages, etc. It is derived from the QwikiWiki software of David Barrett.