About Hypothesis (Google AW)

Collaborate with anyone, anywhere

Use Hypothesis to annotate anything online with classmates, colleagues, or friends. Create a free personal account, or talk to our sales team about Education or Enterprise solutions.

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Leave a note, comment, or highlight on anything online

Annonate anything online, without clicking away. Our technology is based on the standards that define the web, so it works everywhere, on anything.

Turn annotations into conversations

Teams, classrooms, and communities can join groups, share annotations, respond to each other, and go deep on what they find interesting.

Build durable shared knowledge

Shared annotations become a unifying layer of commentary and knowledge spanning everything you and your peers look at online.

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Who we serve

Bringing content and conversation together

Hypothesis adds a collaborative layer over any online content. Through the power of social annotation, we can make online discussions more meaningful, productive, and engaging.