I can mention the ones I'm using on my Firefox for Android.
The most important, without which mobile web would be unusable for me are: uBlock Origin (AdBlock Plus also available) and HTTPS Everywhere.
I would also use NoScript, to completely block Javascript on websites I don't trust, but unfortunately the version for Firefox Mobile is not submitted to addons.mozilla.org and I don't trust extensions that aren't submitted there. Instead I've been using Ghostery lately, not sure what to think of it.
I was also using the LastPass Password Manager, until I migrated to my own solution. I also have Pocket Hits and the Wikipedia Panel for suggesting stuff to read. Because I'm a developer, many times I open JSON links from emails and for formatting, the JSONovich extension seems to work on my Android Firefox.
The most important, without which mobile web would be unusable for me are: uBlock Origin (AdBlock Plus also available) and HTTPS Everywhere.
I would also use NoScript, to completely block Javascript on websites I don't trust, but unfortunately the version for Firefox Mobile is not submitted to addons.mozilla.org and I don't trust extensions that aren't submitted there. Instead I've been using Ghostery lately, not sure what to think of it.
I was also using the LastPass Password Manager, until I migrated to my own solution. I also have Pocket Hits and the Wikipedia Panel for suggesting stuff to read. Because I'm a developer, many times I open JSON links from emails and for formatting, the JSONovich extension seems to work on my Android Firefox.