Hi Graham, here’s a couple notes for your seven extensions:
- Diigo: we’ll reach out to the dev to see if we can help with the functionality loss
- LastPass: we are actively communicating with them about their migration
- Session Manager: might not be possible until after version 57, if at all. We’ll also be reaching out to them.
- Showcase: we’ll look into this
- Stylish: currently blocked, will find out the details about this
- Tab Groups: best alternative for now is Tab Center Redux, but more work is being done on APIs here so we expect there to be more alternatives coming in the next few months
- Vertical tabs: here’s one you can try out, but we also expect more alternatives for vertical tabs coming up