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.

Voxer - Turn your phone into a Walkie Talkie. Don't waste time on phone calls and voicemails.

Zulip - Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones.

Investis - Investis helps companies to use digital channels to increase revenue, enhance employee engagement and influence corporate audiences.

WhatsGreen Multi Messenger - Easy access to WhatsApp, Line, Telegram, FB Messenger and many others via the Chrome toolbar.

NextPlane - NextPlane offers cloud-based, scalable unified communications federation service for the enterprise.