@nikolal
Yes, it is unmaintained at this moment, but the F-Droid fork is still maintained.

I wouldn't recommend Firefox as, even though they are Open source, they use proprietary plugins and gets paid to use Google as their default search engine (which is intruding the "Privacy" advertisments).

Also, they have terrible privacy defaults and aim for money.

I'm not saying Firefox is bad since they give you the power to tweak it, but it's far away from Privacy.

Stay Safe!