PUBLIC MARKS from decembre with tags legacy & firefox

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/°

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.