[abemassry]

I wrote this a while ago and full disclosure I am the maintainer of this repo and I run the service, but I wanted a way to do full end to end encryption that was easy for me to use

https://github.com/abemassry/wsend-gpg

The downsides are it's command line only, the upsides are you can audit the source and the encryption happens before it leaves your machine. Just wanted to share it with you in case you were interested. I'm a Signal user as well and I like what they are doing too. I have some friends who only exchange messages with me on Signal.