Twiddla is a great online whiteboard tool that lets multiple people access the same online whiteboard and edit it at the same time.
Google Drive is a cloud based storage service that lets you store anything you like in the cloud and share with anyone you like. You can also create, edit and share documents, presentations, spreadsheet and more in real-time in the cloud.
Google Hangouts allow you to have video conferencing with up to nine people. You can also share edit Google documents and view you tube videos in real-time.
(Featured Image: Venessa Miemis)