Joomlacode.Org is one of the shoulder for Joomla Developers.
This official site is used to host open-source Joomla! projects. It provides third-party open-source Joomla! developers with free access to useful project development tools. This list details some of the tools with which JoomlaCode.org provides us:
Document Manager
Forums
FRS (File Release System)
Mail Lists
News
SVN (Subversion)
Tasks
Tracker
Wiki
If we intend to create an open-source Joomla! project, it is advisable to consider using JoomlaCode.org to host the project, even if we do not intend to use all of the features it provides.