CJAN - Comprehensive Java Archive Network - was created after Perl's CPAN. It allows developers to register modules, write documentation and upload tests.
With a command line tool or via the web interface, CJAN testers can upload the test results to the website. It also includes information about JVM and Operating System.
This way, other developers can know beforehand whether a Java module (API, library, tool, server, program, etc) works with his desired environments.
Different than java.net, CJAN.org has no intention of hosting projects, source code management systems, or bug tracking tools. Similarly to CPAN, in CJAN each module documentation will point to the source code repository (hosted somewhere else, like GitHub, SourceForge.net, GoogleCode), bug tracking tool, web site, etc.
This way projects won't have to change to be part in CJAN, and it gets easier to administrate the whole environment and avoid outages.
The content in CJAN will be simple too, taking advantage of websites like Reddit, where users can post links, share, comment and vote.
CJAN content management will be similar to DZone and Reddit - collaborative.
The whole project will be licensed under a permissive license. The goal will be gather a community around the project, and create a board. Then proceed and donate the project to an organization like SPI.
Pretty much like Jenkins, the idea is have a community roled by meritocracy, and make sure that the project continue free, useful, stable and fun to use/learn/share/participate.