Marginalia is an open source Javascript web annotation system that allows users of Moodle or other web applications to highlight text and write margin notes. The software works in major browsers including Firefox and Internet Explorer. Below is a Moodle forum with Marginalia annotations. To see the software in action, take the tour, or try it out in the sandbox.

Marginalia was developed specifically to enhance education, particularly to enrich online discussion. For a better understanding of how Marginalia can help improve online education, please see the pedagogy section of this site.

Marginalia is the 2008 winner of the British Columbia Innovation Award in Educational Technology.