TodaysMeet - http://todaysmeet.com
Todaymeet helps you embrace the back channel and connect with your audience in realtime. Encourage the room to use the live stream to make comments, ask questions, and use that feedback to tailor your presentation, sharpen your points, and address audience needs. This website allows you to create a room and have a set time for the room to be open. With this students can ask questions as you teach, and classrooms can collaborate by giving each other advice on different topics.
Primary pad - http://primarypad.com
Primary Pad is a web-based word processor designed for schools that allows people and teachers to work together in real-time. Primary Pad is great for getting ideas, collaborating, sharing and quickly posting pieces of information when working in a group or collaborative environment. It also helps with improving important typing and English skills as well as critical thinking. This website is also run by one of the worlds finest Education web service providers, Primary Technology.