A free (libre), open-source (GNU LGPL) web-conferencing system developed with support from the Mozilla Foundation's WebFWD project. Designed for online education, BigBluebutton provides voice- and video-conferencing capabilities that include conference recording, presentation uploads, virtual whiteboard, and simultaneous webcam users.
The BigBlueButton server runs on Linux, but virtual machine images are available for running the server on other platforms.
Make free calls to anywhere in the US via your PC * Call length limited to up to 10 minutes per day to most landlines & select mobile phones around the world.
Simple and free web application that lets you brainstorm. * Create colorful mind maps online * Share and work with friends * Embed your mind map in your blog or website * Email and print your mind map * Save your mind map as an image