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
Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
Vocaroo - Vocaroo is a quick and easy way to share voice messages over the interwebs.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
statuspage - A simple self-hosted status page site with an API written in Django under the BSD license.
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.