You’ve got the perfect set of add-ons installed on your copy of Firefox. Then, you find yourself setting up another copy on a different computer. Easy to install but finding and installing all those add-ons again will be a bit of a pain. Instead of that tedious process, just install the Mozilla Firefox Add-on Collector on both installations. This way you can back up all the add-ons from one copy of Firefox and reinstall them on the new copy en masse.

Additional features include:

• Recommend Collections
  Subscribe to an Add-on Collection and get notification when it grows. If you’re creating the collection, there’s space to tell why you like an add-on and give some context for customization.
• Share Add-ons
  Ping friends about good finds. Choose “Publish to” and they get news about add-ons in a ready-to-go format endorsed by the source (that’s you!).
• Sync with All Sources
  Announce new Add-on Collections and give links that stay current, thanks to Auto Publisher. Sync devices and keep all your browsers stocked with your latest collection.