Yac - Take your time back from Zoom & Slack
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
Twitter spaces - Live audio conversations on Twitter
Vocaroo - Vocaroo is a quick and easy way to share voice messages over the interwebs.
Angle Audio - Live audio conversations as a service
statuspage - A simple self-hosted status page site with an API written in Django under the BSD license.