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HipChat is an instant messaging service designed for companies and teams. It has persistent chat rooms, one-to-one chat, searchable chat history, file sharing via drag & drop and clipboard, inline image previews, an API, chat over SMS, and more.

Jitsi Meet is an OpenSource (MIT) WebRTC JavaScript application that uses Jitsi Videobridge to provide high quality, scalable video conferences.

Campfire is a simple web-based real-time group chat tool for business. It makes real-time communication with 2-60 people as simple as visiting a web page.

Open Source private chat server. Your own private Chat server in minutes, plus additional features. No credit card required.A fast, secure and stable solution based on Rails.

Add free live chat to any web page.

Flowdock is a beautiful group chat. You can upload files, paste blocks of text, use #hashtags to make notes or create lists and mention others’ names to get their attention.

Disposable online chat. With anologue you can quickly and easily engage in an anonymous (or not) linear dialogue with any number of people (within reason). No accounts. No installations.

Safe chattingSend confidential information like passwords, emails and credit card numbers safely over an unencrypted network.

Hyphen is an inter-company messaging app that allows businesses to instant message each other. Start building relationships, not just connections. We provide a network to connect businesses and professionals across all industries whether it's to an individual, team or entire business.

This is a simple web chat. It's open to anyone and chat channels are owner-free.

co-meeting is a text-based group discussion tool. This live-typing chat tool lets you have a conversation that can also deliver the “atmosphere” which was impossible to share with your participants using traditional chat tools. co-meeting also lets you take meeting minutes during a discussion by using the real-time concurrent editing capability. Because everything is done through texting, you can have discussions without being constrained by time and location. Don’t waste your time in meetings. Don’t meet. Co-meet! »

Jaconda is designed as an easy-to-use company chat. It offers persistent chat rooms with searchable history, file sharing, guest access and more.It integrates with Jabber/Gtalk and can be used from web page or preferred Instant Messenger on any platform (even on mobile phones).Jaconda also integrates with many web-services developers use and has a powerful API.

Opensource Social Group Chat written in Ruby On Rails