What the heck, here's another four.

File management : https://sourceforge.net/projects/ghostcommander/

Scan for application embedded trackers : https://f-droid.org/en/packages/com.oF2pks.classyshark3xodus...

mpv for Android : https://github.com/mpv-android/mpv-android

Multipurpose downloader, aria2 -- it's also available through Termux : https://github.com/aria2/aria2

Edit : https://github.com/termux/