FreedomPop - FreedomPop is a free internet and phone service provider that offers the free phone services.

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

Talkray - Talkray is a tool for free calling and chatting purpose.

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

Ooma - Ooma us a free internet based phone service the delivers the efficient VoIP services at clear calls.

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