I use one called X-Plore. It's actually very good. Even has a WiFi server, conpressed archive support, etc. but the downsides are that it's close sourced and some features are behind a paywall (though IMO they are worth it).
So I was thinking of moving to some free or open source software. Any recommendations?
It's free (not sure if FOSS), and there are non-essential-but-nice-to-have features that are paid, just to support the dev - but the free features are awesome, and more than enough for me.
It's not FOSS.
FOSS means Free Open Source Software (Free as in freedom, not as in free beer).
MiXPlorer is neither open source nor licensed under a FOSS license.
It's proprietary.
I use a couple of simple apps, the gallery is great, the file manager is not amazing but it does the job, I guess I haven't encountered many issues because I use it together with other apps (a different pdf viewer, a different zip manager, etc)
I used it too, the biggest issue is no webdav support, than zip support is bad, pdf viewer is bad, no built-in image viewer, so you always switching to gallery (it is great, but switching back and forth is not good) eventually I decided why using two file managers instead of one and CX is really good and simple to use.
Same for me, switched from Total Commander, since Material Files is a bit more comfortable to use. For some reason I do not get the same upload speeds to my home server though, and I cannot figure out why.
That said Total Commander sometimes lost connection and I had to start over, so I am ok with slower upload if its more consistent.
I had been using Solid Explorer and decided to try some open-source options. Amaze seems to be the best of them, but I went back to Solid Explorer after trying it for a few weeks.