[gnuarch]

https://quicksy.im/ – a spin-off of the popular Jabber/XMPP client Conversations with automatic contact discovery.

> Even if you are not a Quicksy user you can enter your Jabber ID into the Quicksy Directory and give Quicksy users the ability to automatically discover you based on your phone number. This lets you enjoy the privacy-friendly, federated nature of Jabber/XMPP while giving your less tech-savvy friends a low barrier entry into that world

// not affiliated; saw this recently, like the idea.