ReLaunchX

Monochrome Launcher primarily intended for eInk and eBook devices. Can work as a
system launcher or a normal app. Includes file manager, text file viewer, editor
and some system functionality. It is a fork of https://f-droid.org/packages/com.harasoft.relaunch project
rebranded to avoid confusion. Tested on and developed for Onyx Boox Max, but
many other e-readers are supported as well. Discussion goes on the forum
mobileread.