Review for about:addons-memory by Tony Mechelynck
Rated 5 out of 5 stars
Nice! (And reassuring: of 70 enabled extensions, the biggest ones are Adblock Plus, ChatZilla and "SeaMonkey", all the rest is below 3 MB apiece, total 135 MB).
This review is for a previous version of the add-on (6.1-signed.1-signed).To create your own collections, you must have a Mozilla Add-ons account.