APK Editor Studio v1.5.0
qwertycube.com
qwertycube.com
https://play.google.com/store/apps/details?id=com.lbe.parall...
Insular (FOSS fork of Island without proprietary blobs): https://f-droid.org/en/packages/com.oasisfeng.island.fdroid/
Shelter: https://f-droid.org/en/packages/net.typeblog.shelter/