VoIPstudio
VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.
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VoIPstudio
pttdroid
Telegram
WhatsApp
Zulip
LINE
Telegram X
Voxer
Phoner Second Phone Number
Sesame Chat
WhatsApp
Zulip
WowApp
WhatsGreen Multi Messenger
Green Messenger
Telegram
App for WhatsApp by coldX
pttdroidTelegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
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.
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.
WowApp - Wowapp is the best alternative to Skype and you will get paid to use it!
LINE - LINE is a Japanese proprietary application for instant messaging on smartphones and PCs.
WhatsGreen Multi Messenger - Easy access to WhatsApp, Line, Telegram, FB Messenger and many others via the Chrome toolbar.