Omegle - Omegle is one of the most popular online chat website allowing user to communicate with anyone without registration.
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Chatous - Chatous - random chat with real people from all over the world! Make friends with text or video chat.
Diigo - Diigo is a powerful research tool and a knowledge-sharing community
FaceFlow - Online Chat & video chat with friends, family and even strangers on the Web. High quality, no download & FREE. Start chatting now!
Weava - Workspace to highlight, organize & collaborate on your research articles.