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 ...

LINE is a Japanese proprietary application for instant messaging on smartphones and PCs. Line users exchange text messages, gr ...

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

Threema is a new mobile messaging app that puts security first. With true end-to-end encryption, you can rest assured that onl ...

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 ...

Conversations is a privacy focused, open source XMPP Texting [Jabber] client for Android 4.0+ smart phones with wife-approved ...

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

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework. It is a great solution for co ...

Glip is instant messaging for teams and businesses to communicate and get work done at the same time. In Glip you work where y ...

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

ChatSecure is a free and open source messaging app that features OTR encryption over XMPP. You can connect to your existing ac ...

Protect your communication in transit and on your phone. SMSSecure is a full replacement for the default text messaging applic ...

Gitter is a chat and collaboration tool for developers and users. It's a place for developers to talk.

KEY FEATURES

• Unlimited ...

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

Empathy is a messaging program which supports text, voice, video chat, and file transfers over many different protocols. You c ...

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