MindMup is a free, web-based mind mapping application written designed to run in HTML5 browsers. MindMup is released under the MIT License, and the source code is available from GitHub. MindMup is also available as a free anonymous web service at mindmup.com, which enables users to store maps on several cloud storage providers, including Google Drive, Amazon S3 and GitHub and collaborate in real time with other users.
A very simple tool for highlighting webpages. It works great for research projects or for any time you need your students to focus on a certain part of the page. No signup is needed. Simply enter the URL of the site you want to highlight. Then, drag the highlight area. You will get a custom URL of the page with the highlight area visible and everything else greyed out. This works great when you want to show your students a web video without the distractions of suggested videos and ads.
Online whiteboard that is a good tool for real-time collaboration. It's easy to use, and lets you upload images from your computer or by its url address.
Hangouts allows users to hold conversations between two or more users. The service can be accessed online through the Gmail or Google+ websites, or through mobile apps available for Android and iOS.
join.me combines instant screen sharing meeting tools in an app that anyone can use to present, train, demo or concept. Designed to be intuitive and accessible, providing features that accommodate everything from show-and-tell to formal presentations.
Desktop HD video conference with anyone, anywhere. It takes 5 seconds to start a meeting - everything works directly in the browser. No downloads and no installations required.