Some of mine are grayjay, kotatsu, expenses, voyager, feeder, mull and syncthing
Eternity, Material Files, Nextcloud, Termux and idk if it counts, but Expo Go, it’s amazing for development.
- Newpipe
- Newpipe
- Newpipe
- Mull
It sucks that Syncthing is discontinuing its android app
It would be up near the top of my list.
There’s syncthing-fork that I hope will continue to be maintained (especially as they committed a guide on how to switch from the official app 2hrs ago). I’ve used it already before the depreciation of the official app and it’s working reliably.
It looks like Play Store releases are planned to be stopped, so it’s probably best to install it either directly from the GitHub releases (for this, Obtanium is also a great tool for finding and updating apps from lotta sources), or with F-Droid.
Termux + syncthing cli + tasker
But this is not a solution for those that you do family tech support for.
Some great apps on here, iv noted a lot of them down to try out
All of the above managed through Obtainium, directly from the source.
- Bitwarden (Google Play link)
- Eternity for Lemmy (Google Play link)
- HordeNG (taken down from Google play, but if was basically just a wrapper for a web app which you can install easily from the browser anyway - https://horde-ng.org)
- Baby Journal (also a web app wrapper, available as a web app at https://baby-journal.app)
- probably others from Google Play I don’t use that often and don’t remember whether they are open source or not
Three of those are made by me, but I also use them often (that’s why I created them in the first place).