A well-designed desktop client for WhatsApp but lacking many features
Possibly the best cross-platform voice chat, text chat, and group calls application out there
The desktop version of the privacy-enriched messenger app
An open-source instant messenger focusing on privacy and with many options to customize
The premier video conferencing and meeting application for your team
One of the world's leaders in video conferencing for businesses and teachers around the world
A great video conferencing software for chatting with people anywhere and anytime in the world effortlessly
The premier meeting application for business and casual teams
An advanced email client for professional users who manage many email accounts at once
A great solution for HD video meetings and conferencing
An app that lets you message and call people for free
The perfect application to talk and chat with others over the Internet