Twitter is an online social networking service that enables users to send and read short 280-character messages called "tweets ...

Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full end-to-end encryption that supports prot ...

Facebook's mission is to give people the power to share and make the world more open and connected. Millions of people use Fac ...

Skype is the most popular free voice-over IP and instant messaging service globally. It allows users to text, video and voice ...

Wire is a secure and private messenger for phones, tablets and desktop. Crystal clear voice and video calls, private group cha ...

TextSecure and RedPhone have been merged to create Signal! Using Signal, you can communicate instantly while avoiding SMS fees ...

Hangouts is a messaging app that lets you send and receive messages, photos and more, and even start free video and voice call ...

Mattermost is an open source, self-hosted Slack alternative. As an alternative to proprietary SaaS messaging, Mattermost bring ...

Slack brings all your communication together in one place. It’s real-time messaging, archiving and search for modern teams.

Telegram is a messaging app created by former VK creators with a focus on speed and security. It’s superfast, simple and free. ...

Riot (formerly Vector) is an opensource interoperable app running on Web, iOS and Android. It is built around chat rooms, both ...

With the rise of widespread government monitoring programs, Tox is an easy to use application that allows you to connect with ...

WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SM ...

Matrix.org is a growing ecosystem for open, decentralised chat, VoIP and IoT communication. The Matrix project defines an ope ...

All-in-one voice and text chat for gamers that’s free, secure, and works on both your desktop and phone. Stop paying for TeamS ...