Annotate the web,
with anyone,
anywhere.
Engage your
students with
social annotation.
See how it works.
Select text to annotate.
Add tags and post publicly or save privately.
Reply to or share any annotation.
Link to notes or whole pages.
Annotate together in groups.
Collaborate privately with others.
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An open community project.
We're a mission-driven organization.
Dedicated to enabling layers of conversation over the world's knowledge.
Building an open platform
That works everywhere, based on open-source technology and interoperable standards.