emargin

eMargin is a free tool developed by Birmingham City University in the United Kingdom.

You can upload any text and have students annotate it, and the same text can be annotated by a closed group. In addition, you can “upload” a web address and annotate it, as well. The lay-out can be a bit funky with websites, but it’s still workable.

I’m adding it to Best Applications For Annotating Websites.