With Firefox Firefox 54.0.1 I have 69 active extensions.
The extensions in which I’m most interested – I’ll not use Firefox 57 without these, or suitable alternatives:
- Diigo Toolbar – the more recent Diigo Web Collector, first released 2017-07-19, is unsuitable (significant loss of functionality)
- LastPass
- Session Manager
- Showcase
- Stylish
- Tab Groups by Luís Miguel (Quicksaver)
- Vertical Tabs Reloaded.
Side notes
From Firefox Sync failing to sync at least ten exensions - #2 by grahamperrin
… Firefox Nightly 57.0a1 … (some of the legacy extensions are forcibly disabled): 56 active extensions … seems impossible to install Containers, Min Vid or Snooze Tabs. …
If we assume that those three Firefox Text Pilot experiments will become usable with Firefox 57: let’s say, 59 active extensions.