Chadder - Encrypted messaging app

Telbee.io - telbee adds voice messaging to podcasts, websites, social media and email to easily hear from and build human relationships with your customers and community - save time, reduce frustration, and gain sales, understanding and fans

GrapheneOS - GrapheneOS is an open source privacy and security focused mobile OS with Android app compatibility.

Vocaroo - Vocaroo is a quick and easy way to share voice messages over the interwebs.

Earlynote - A time-travelling messaging app

statuspage - A simple self-hosted status page site with an API written in Django under the BSD license.