14 DAY TRIAL // Firefox's Electrolysis (e10s) feature is expected to launch with version 43 of the browser, scheduled for release around December. Electrolysis adds multi-process support to Firefox, and it will have a major impact on Mozilla's add-on collection.
Because in Electrolysis Web content and core browser code is run in two different processes, Firefox's unrestricted add-ons will have to be adapted to this new way of executing code.
While not all add-ons interact with both the browser's core code and the page's content, some of them do, and that's why it is important to know which extensions will break when updating to Firefox 43 this December.
To help users get an overview of what add-ons currently work and which do not, "a happy DreamHost customer" registered a domain on which he created a database of all e10s-compatible Firefox add-ons.
Mozilla needs help with testing add-ons for e10s compatibility
Besides listing add-ons that are currently working, are shimmed (hacked to go around the issue), untested, or are completely broken, the site also encourages users to install a recent version of Firefox Nightly (which includes e10s support) and help out with the testing.
If users find a broken add-on, they are encouraged to report the bug to its developer, to help them smooth out problems before the grand launch.
The site only lists about 873 Firefox add-ons right now, some of the most popular ones, and currently only 124 of them have proper e10s support.
The situation is not looking good at the moment, and many of us here in the press that keep a constant eye on Mozilla's doings are fearing the worst. So the data on this website is not thrilling us in any way.
If you need help understanding what Mozilla is doing with Firefox, we wrote a longer editorial on this topic a few weeks back.