PLEASE don't abandon TabKit! Rated 5 out of 5 stars
After years of using FireFox exclusively, I still find Tab Kit the only add-on that's truly ESSENTIAL.
Just saw that you're starting a new job. Congrats...but I wish you'd allow users to send contributions so you it would be worthwhile for you to continue development. I pledge $20 right now!
[BTW--the bookmark group feature stopped working w/FF 14...]
I am not going to stop, but I must slow down
Since I have much less time now
I will only deal with bug reports or small enhancements
To make the project keeping going in a reasonable speed,
I think there should be project leader with more time and skill than myself
(I am not a skillful Firefox developer. Seriously)
BTW The group bookmark feature fixed, will release it in 0.9.9.7
(Dammit they change the API again!?)