1. Cryptocat – An Open Source Encrypted & Private Chat Application
Cryptocat is an open source web-based instant messaging chat application. Unlike other instant messenger tools, it focuses on ensuring that communications are encrypted and personalized.
Cryptocat is based on PHP development, except for static files (CSS, JS and images), only a single PHP file. Its interface is simple and beautiful. The message uses the crypto.js library for AES-256 encryption.
Its interface supports multi-lingual parties and can be extended with plugins.
Candy provides good documentation and a complete API that can be easily integrated with other applications or websites.
Project address: http://amiadogroup.github.com/candy/
3. JsChat : An Open Source Chat System
Js Chat is an open source chat application that uses a simple JSON-based protocol. Js Chat was developed using Ruby (Sinatra). It has a console client that looks like an IRC client. It is capable of displaying images and YouTube videos. Users can log in using a Twitter account and log using mangodb. With Js Chat users you can create multiple chat rooms. Its protocol is designed to be close to executable code, so it’s easy to create a client.
Project address: http://jschat.org/
4. Big Blue Button: An Open Source Video Conferencing Chat App
BigBlueButton is an open source video conferencing system that is especially suited for distance education and for standard meetings. The system allows multiple users to log in, share their cameras and simultaneously communicate via VOIP. PDF and Office documents can be presented online, and users can share their desktops with other users. Users can speak up and support group chats and private chats.
Project address: http://demo.bigbluebutton.org
5. iJab : Open Source Chat Ajax Im Application
iJab also developed a web instant messaging client called iJabBar, which is similar to the Facebook chat style. Features include:
Embedded browser running, no pop-up sound
Also supports instant messaging protocols such as MSN and AIM.
Project address: http://opensource.ijab.im/