Slack is a cloud-based team collaboration tool.

TeamSpeak is software for quality voice communication via the Internet.

HipChat is a web service for internal private online chat and instant messaging.

Banckle Chat is an application for online chat & customer support solution.

TribeScale is an All-in-One platform to coordinate your team around what really matters - communication, goals, decisions, tasks and results.

Fleep enables communication within and across organizations, be it your team chats, project communication or 1:1 conversations.

Glip is fully searchable, real-time group chat; video chat, task management, file sharing app.

Mattermost is an open source, private cloud Slack-alternative, Workplace messaging for web, PCs and phones. MIT-licensed.

Rocket.Chat free open source chat solution.

Qiscus provide everything you need to power up your app with chats.

Grape is an REST-like API framework for Ruby. It's designed to run on Rack or complement existing web application frameworks such as Rails and Sinatra by prov…

Hubgets provides chat, voice and video turning team communication.