We have colored them, moved them, shrunk them – so why not add little colored flags to your tabs?  The FlagTab add-on for Firefox gives a little more control when it comes to organizing your open tabs in Firefox.  For each tab open you can add a different colored flag, or give several the same colored flag.  The organizational options here are endless.

This extension for Firefox would come particularly handy when it comes to working on a project, where you need to keep track of which tabs are with which set of sites.  For example, if I was writing something about Firefox, I might flag the Mozilla sites I was getting information from green and the non-Mozilla sites red.  That way I can quickly see the difference between the two.

So if you are in need of another way to organize your open tabs – FlagTab might just do the job.