What is mambo?
Mambo is content management system released under GPL, which means it is free to download and use. Mambo can be used for creating websites and managing it through a web browser, unlike conventional CMS that has limitation in changing the look and feel of the website, as well as adding new functionality to the program to match the website's needs, mambo has been developed with these in mind and offer template based system for user to easily change the look and feel of their website, and offering and API engine for advanced web developers to extend the functionality of mambo.
Mambo official website offer news and updates of mambo development, an active mambo developer exchange website offer a platform for mambo developer to share and learn from each other.
Mambo has come a long way and has been through a series of ups and downs since it's inception in year 2000. Originally, it was planned to release the software free for use to collect feed backs to enhance the program before actual commercial release. The software was receiving very good responses and this has lead to a split of twin license of the software, a commercial license and an open source license. This has later brought up a series of ownership issues, legal matters and massive changeover of core development team members that has some how affected the development of mambo, you can check through the history of mambo at wikipedia if you are interested about the history side of the software. Although there has been a rocky ride for mambo, it has successfully delivered an open source program that is well received by the web developer community due to it's ease of use and the ability to allow addon developments, which is rare to the open source community especially in the CMS development at that point of time, these has also lead to winning some awards for the software.