OpenDocMan is a full featured Web-based document management system (DMS) designed to conform to ISO 17025/IEC. It features an automated installation script, custom themes, plugins, check-in/out, departmental access control, file moderation, fine grained user access control, and a great search function. Written in PHP, and utilizing MySQL for the backend, this project is useful for any company looking to keep their documentation in a centralized repository.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.