Mambo is a full-featured content management system that can be used for everything from simple
Web sites to complex corporate applications. It has a rich feature set, a long history, and a stable codebase.
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.
The database footprint was decreased.
Compatibility with older third party extensions
was improved. Support for 4.5.x style SEF URLs was
added. Many of the internal extensions were
updated. The MOStlyCE WYSIWYG editor was enhanced.
Several bugfixes were made.