hack.chat is a minimal, distraction-free chat application. Channels are created and joined by going to https://hack.chat/?your ...

Zenkit is a collaborative SaaS platform for project management, database building and more. Follow your data through its entir ...

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

An IRC-like internet chatroom hosted on ZeroNet, a distributed network. 0rc is a fully distributed website, and messages are s ...

Basecamp is a web-based project collaboration tool that allows groups of people to share files, meet deadlines, assign tasks, ...

Flock is a faster, more organized way for teams to communicate. Flock provides one-on-one chat and public and private channels ...

Quip is a modern word processor that enables you to create beautiful documents on any device, including the iPad, iPhone, and ...

kune is a social network where you can communicate, collaborate and share between equals, using different web tools: documents ...

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.

eXo Platform is an all-in-one open-source digital collaboration platform that provides knowledge, document and content managem ...

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 ...

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

KEY FEATURES

• Unlimited ...

Samepage is award-winning collaboration software built to help teams co-author documents, share files, manage tasks & cale ...

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

HipChat is an instant messaging service designed for companies and teams. It has persistent chat rooms, one-to-one chat, searc ...

Yammer is revolutionizing internal corporate communications by bringing together all of a company’s employees inside a private ...