PUBLIC MARKS from decembre with tag legacy

A giant table, I think it would be important to also include whether an old extension is no longer possible (deprecated), or someone just hasn't written an alternative yet, or whether there exists a planned API addition that would make it possible. Lots of alternatives are also missing a few features, and it would be good to know what's missing and why (impossible or just not yet implemented)The list is certainly not giant yet, but here's a start (based on responses from this post)/ https://www.reddit.com/r/firefox/comments/6i1fu2/webext_equivalents_to_legacy_addons/°

FIR 57 - ADDON - uBO/webext works best with Firefox 57 and above, and with multi-process enabled. There are many reports of people experiencing issues with some web sites, or images not loading, etc. Turns out many of these are a result of using some legacy extensions along uBO/webext. For instance, Reek's AAK in GreaseMonkey has been causing issues with images not loading. If you experience such issue, you will have to disable all your legacy extensions and see if this fixes your issue. If so, then you will have to re-enable your legacy extensions one by one to find the one(s) causing the problem. Those legacy extensions can cause multi-process to be disabled in your browser, and apparently when multi-process is disabled, this can cause many cases of page load failure.

If you are using Firefox Nightly right now, you may have noticed that the latest update of the web browser disabled all legacy add-ons. Firefox Nightly is the first version of the Firefox web browser that hit version 57, the version of Firefox that drops support for so-called legacy add-ons in favor of WebExtensions.