KnowledgeTree is a powerful Web-based document management system built on the popular LAMP (Apache/MySQL/PHP) stack. It is a leading PHP-based commercial document management software project. KnowledgeTree is used by Fortune 500 companies, community organizations, local and state governments, and educational and scientific institutions around the world.
KnowledgeTree is now licensed under the GPLv3, and has moved to PHP 5 and MySQL 5. A new powerful search system has been implemented. A scheduling system has been added.
URL: KnowledgeTree | Hosted On-demand & On-premise Open Source Document Management and Control Software