1. ArrowChat is a jQuery based live chat software that uses PHP and mySQL.

  2. Cliq is a mobile app to promote team collaboration and communication.

  3. Openfire (formerly Wildfire) is a cross-platform instant messaging (IM) and groupchat server.

  4. ChatWork is a group chat app for business

  5. Browser-based app to visualize the frequencies of an audio file.

  6. Project management software for SMBs. Online collaboration tool to increase productivity used by 25,000+ businesses.

  7. Crust Messaging is a secure, high performance, open source Slack alternative that allows your teams...

  8. ClickUp's #1 rated productivity software is making more productive projects with a beautifully designed and intuitive platform.

  9. Zenkit is the home you always wanted for your ideas, your projects, your business.

  10. Spekfy

  11. XMPP client designed with ease of use and security in mind

  12. Smoothly Share Content Between Devices!