There are several ways to contribute to the Gforge project.
The first one is to give us a feedback about the software: what you like, what you don't like, features you like to be added in new versions, comments on documentation, etc.
You are willing to help develop new features. Give a look at the PM/Task Manager. The three subprojects (Todo, Documentation, Localization) lists the open tasks. You can pick up one of the open tasks and start working on it.
If you find a bug, submit a bug to the Bug tracker at http://gforge.org/tracker/?group_id=1. If you already solved the bug and are willing to share the fix with us, please add a patch to the bug.
If you have developed some new feature, submit a patch to the patch manager of gforge. The submitted patch should follow the Coding and Templating standards described in this document.
Documentation: there are some parts of Gforge that are not well documented. Refer to the Task Manager, Documentation subproject for a list of open tasks. You should write the documentation in the xdoc format as described in this section.
Localization: The user interface of gforge is now nearly completely localized. We need translators for the different languages.
If you like to translate gforge to a new, not listed language, you can refer to the Localization Howto document to see how to add a new language