ReLaunchX is a fully open source monochrome file manager/book manager designed for e-ink. It can be used as an Android launcher too.
ReLaunchX source is on
GitHub. Builds are provided automatically (based on tag ReLaunchX_%version) by
F-Droid though the best way is to download AndroidStudio and build the app yourself. Remeber that it has one submodule (see git submodule init, update, etc.).
App changelog is at the bottom of README on GitHub.
The story
I have found ReLaunch on F-Droid once I bought Onyx Max but it had compatibility issues. Nonetheless the design appeared to me more professional than the Onyx launcher so I decided to get my hands on it and quickly fix the bugs instead of spending weeks on developing something from scratch. I rebranded the fork since I have no way to test it on other devices and I thought of sharing it back on F-Droid. ReLaunchX was born
ReLaunchX 1.0.0 = ReLaunch 1.3.8
I mainly fixed bugs in the original app and did some little improvements so far. The app should be compatible with all devices where ReLaunch worked well. I'm happy using it as it is and from time to time I contribute a little to it when I have the time but I don't have any serious development plans for it.
Recently, the original ReLaunch was dropped from F-Droid as it was not maintained since 2006.
Enjoy
EDIT: Attaching latest build since F-Droid has some infrastructure issues and did not rebuild the app for a long time. I'm not going to keep the attachment up-to-date. You should always check F-Droid first for the latest version.