Having skimmed through http://trac-hacks.org/wiki/WikiStart, here's a
list of interesting plugins:
For branch management:
----------------------
http://trac-hacks.org/wiki/BranchTimelinePlugin
-- A filter for timeline based on svn branch
http://trac-hacks.org/wiki/BatchModifyPlugin
http://trac-hacks.org/wiki/GridModifyPlugin
http://trac-hacks.org/wiki/TracReportInplaceEditPlugin
--
Quite similar plugins allowing to quickly modify a bunch of tickets
while dislaying them in table form.
http://trac-hacks.org/wiki/TracUnreadPlugin
-- Keep track of what you have already read and what not
For the fixedin* issue
----------------------
http://trac-hacks.org/wiki/CustomFieldAdminPlugin
-- Helps with adding custom fields
http://trac-hacks.org/wiki/TestingWorkflow
-- Adds a testing status (open -> testing -> closed)
It seems to me that adding a new status to the ticket workflow is both
simplest and makes more sense. In fact the TestingWorkflow plugin is
just an include file for Trac.ini
Other cool plugins
------------------
http://trac-hacks.org/wiki/CodeTagsPlugin // FIXME: add this to trac
http://trac-hacks.org/wiki/DoxygenPlugin
http://trac-hacks.org/wiki/DuplicateTicketSearchPlugin
http://trac-hacks.org/wiki/GitPlugin
http://trac-hacks.org/wiki/GitoriousPlugin
--
Julien