Free web-based bug tracking system written on PHP. Some of the main features are: fully custom templates, advanced filters, LDAP support, email notifications, subscriptions, reminders, flexible permissions management, graphical project metrics, etc.
CxP , its a free and open source program of prescription for builders or architects
EyesOfNetwork is free and is designed to allow easy implementation of a library process (ITIL). It simply shows information, raises alerts when there is trouble, helps the team to solve it, and very easily provides SLA reports in an editable format.
UMAcms (Unified Markup Authoring cms) is more than a portal with lite content managment features, It is a true object oriented CMS in every sense of the term. Designed to be used with PHP5.1 ADODB MySQL5 or PgSQL 8. OOP, AJAX, SOAP API, SVN integration.