Enhance firefox tab browsing with add ons

Firefox is one of the best browsers because of its features security and also the most important thing is the "add ons". One such add on is the "Tab Mix Plus" which has lot of features to enhance the tabs functionality and user power over these tabs. To name a few it has features like:
a. Restore the tabs from a crashed session
b. Re-open a closed tab
c. Close buttons on each tab
d. Change focus/gesture and all for each tab

There are a wide range of add ons for firefox, but this is a must for tab lover.