May 17, 2022

Milestones: Hypothesis Reaches 10 Million Annotations

From a Hypothesis Blog Post and Email:

Hypothesis just reached its 10 millionth annotation. Half of those have happened in the last year.

A bar graph showing quarterly Hypothesis annotations from Q1 2015 through Q4 2019, including markers for when 1M, 2M, 3M, 4M, 5M, 6M, 7M, 8M, 9m and 10M annotations were recorded.


The majority of our record 10 million annotations has been created by people reading together, moving us closer to a shared vision of transforming teaching and learning through social reading. Across all annotations the numbers are remarkable:

    • More than 376,000 people have signed up to annotate with Hypothesis
    • People have annotated almost a million unique documents
    • Students and teachers have come together to annotate in nearly 2,500 classes
    • Over 800 different institutions have integrated Hypothesis into their learning management system (LMS)


Video Message From Dan Whaley, Hypothesis Founder and CEO

Read the Complete Blog Post

See Also: 27 New Schools Pilot Hypothesis and Join AnnotatED

About Gary Price

Gary Price ( is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. Before launching INFOdocket, Price and Shirl Kennedy were the founders and senior editors at ResourceShelf and DocuTicker for 10 years. From 2006-2009 he was Director of Online Information Services at, and is currently a contributing editor at Search Engine Land.