Great extension and badly needed for FF. Works perfectly (once you understand its working, its quite easy). Mimics workspaces on other browsers, sadly missed in FF.
One request: is there a way to give each FF window a title? That would make it complete.

Thanks for this extension, Nathan

Great add-on. But one small request - if you can put the count of all tabs somewhere. Maybe at the bottom.

i love this for its simplicity
really very useful for me as i always work with 20-30 tabs

Simple and helpful.

Very helpful when you have many tabs.