Babelzilla

Sort tabs is a Firefox extension that's pretty useful when you have many tabs opened from different sites all mixed in the tab-bar. Sometimes you can't find the tab that your are looking for. By sorting the tabs by URL will be easy find these tabs, sorting here works like a "group". It also has... Platforms: *nix

mid is a tabbed dictionary browser using the language dictionary resources of the Internet. mid stands for Mozilla Internet Dictionary. You can start Mid from your Firefoxs Tools menu. You can also add a toolbar button for easier access: After installing and restarting choose customize... Platforms: *nix

View Dependencies adds a tab to the "page info" window, in which it lists all the files which were loaded to show the current page. It orders the files by servers and by types (image, stylesheet, script, ...). The size of each file, the total size per server and the total page size are... Platforms: Mac

ThunderBirthDay is a Thunderbird extension that display birthdays from the Thunderbird address books as events in Lightning. Quick install: Install Lightning, MoreFunctionsForAddressBook and ThunderBirthDay, then create a new local calendar choosing ThunderBirthDay as provider. Prerequisites:... Platforms: *nix