Dedupe is a project mainly written in JAVASCRIPT and SHELL, it's free.
A small, restartless addon for Mozilla Firefox that removes duplication at the beginning of tab titles.
This addon is based on the patch I wrote for bug 583890.
Unfortunately that patch came too late to make Fx 4.
I plan to update this addon to as close to whatever final patch is used for that bug, so that users of Fx 4 can still have that feature in a small addon.
No plans to update this addon to support future versions of Firefox beyond 4.
Pull requests welcome.