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?
I’ve only tried Solid for 5-10 mins whenever I needed something quickly off the play store (need to download mixplorer from XDA), so maybe I haven’t seen everything Solid does. But a few key features of mix that I like: