Some very good addons (extensions) for Firefox Flock here
Hmmmm i don’t use any of the extensions listed there… IMO all the really good and usefull extensions were left out…wonder why ??? What kind of contest was this anyway? What makes these better than the rest?
They all work very well on Firefox for one thing give Scrapbook a try I think you’ll like it may even work on Flock ;D no promises 8)
firefox showcase
viamatic foxpose
separe
the above 3 are very similar the pick of the lot imo is firefox showcase