https://lnav.org/
The Logfile Navigator | The Logfile Navigator, lnav for short, is an advanced log file viewer for...
The Logfile Navigator, lnav for short, is an advanced log file viewer for the small-scale.
logfilenavigatorshort
https://f-droid.org/en/packages/com.w2sv.filenavigator/
File Navigator | F-Droid - Free and Open Source Android App Repository
The missing link between Android and a well-sorted file system
f droid freeopen sourcefile