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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 …

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 …

Your World of Text is an infinite piece of paper that anyone can write on. The changes made by other people appear live on your screen.

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 visisting a web page. It’s elegant, easy, and web-based. …

MathIM is an online chat provider with built-in LaTeX support (that is, you can use LaTeX right away for providing help with math problems). It can also be used for …

Opensource Social Group Chat written in Ruby On Rails EchoWaves is a Collaboration Tool and a Social Network. EchoWaves is as powerful as CampFire, and as simple to use as …

Chat, SMS, and share all of your files all in one place. Perzo is the secure and more productive solution to your communication needs. Perzo is a secure communication application …

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.

YoFrog is mobile group chat with private rooms of friends. When texting is too limited and tweeting too public, make a space for you and your friends.