The only missing browsers are MS Edge, Opera, and Safari.

• MS Edge: I'm waiting for approval.
• Opera: appears to be a bit crazy, more info in the issue on GH. I might bump it to tier-3 alongside Safari since it looks like it will require its own manifest. Are there any Opera users here?
• Safari: This is tier-3 and will be pursued after Patchfox supports go-ssb. It does work though and I have it running here.

Am I missing any browser that supports WebExtension API? I think I got all of them covered now...

It works on Opera too, just need them to approve the add-on.

This means that Patchfox has been tested and works on all major browsers now.

From the convo with the review system:

Patchfox v2021.6.2 on Opera Developer: Published.
Patchfox v2021.6.2 on Opera Next: Published.

Moderator's note:

Your extension needs to be manually reviewed and moderated before it can be added to Opera Stable. It is currently only viewable and available for download in Opera Developer and Opera Beta.

So if anyone is using Opera Developer or Next, I'd welcome feedback.

Patchfox is now available for Microsoft Edge users.