Onshape is the first and only full-cloud 3D CAD system that lets everyone on a design team simultaneously work together using a web browser, phone or tablet.
"Onshape is the first and only full-cloud 3D CAD system that lets everyone on a design team simultaneously work together using a web browser, phone or tablet."
Site lets teachers post a question online. Students then respond via webcam (no account required) and have their (moderated) comment added to a really great-looking video wall online. Site does cost $65 annually, but that includes 10 walls and virtually endless questions/responses.
Hackasaurus makes it easy to mash up and change any web page like magic. You can also create your own webpages to share with your friends, all within your browser.