Used to be, called LibreSignal. They ran into legal issues.
https://github.com/LibreSignal/LibreSignal
There is a bounty for modifying the signal app source to drop play services.
https://www.bountysource.com/issues/35722527-create-proper-p...
https://github.com/LibreSignal/LibreSignal
There is a bounty for modifying the signal app source to drop play services.
https://www.bountysource.com/issues/35722527-create-proper-p...
Wow, even Microsoft didn't behave that juvenile about LibreOffice.