Quick navigation menu for a multi-project setup
This plugin puts a drop-down box of projects in the metanav bar, allowing quick jumping from one project to another in a TRAC_ENV_PARENT_PATH-type setup.
If you have any issues, create a new ticket.
Download the zipped source from here.
There is also a version on PyPi.
General instructions on installing Trac plugins can be found on the TracPlugins page.
To enable this plugin add the following to your trac.ini file:
[components] projectmenu.* = enabled