Fundamental Addons

by nascent

2 Add-ons in this Collection

Session Manager by Michael Kraft

Rated 5 out of 5 stars 850 reviews

152 users

Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.

British English Dictionary by Mark Tyndall

Rated 3 out of 5 stars 413 reviews

2,462 users

British English Dictionary R1.19 for Firefox, Thunderbird and SeaMonkey by David Bartlett.

To enable, right-click in a multi-line text box, select "Languages", then "English / United Kingdom".

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections