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
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
Vocaroo - Vocaroo is a quick and easy way to share voice messages over the interwebs.
Bigtent - BigTent is a web-based organization and communication portal for groups.
statuspage - A simple self-hosted status page site with an API written in Django under the BSD license.
Nabble - Nabble is a forum software that are embeddable and fully customizable with scripting language.