How mature is Plexus?
Plexus has been in development for around 5 years, and the container API has been stable for over a year. Due to its heavy use in the production level application Maven 2, it is very well tested. In addition, Plexus was originally based on the Apache Avalon Framework, which was used in a large number of production applications and frameworks and has existed for much longer, showing that the techniques used are sound.
