What Does Hypothesis Do?

Total employees32
HeadquartersSan Francisco
Founded2011

Hypothes.is is an open-source software project dedicated to enabling a conversation layer over the entire web. It allows users to annotate web pages, PDFs, and other digital documents, fostering collaborative learning, research, and discussion. As a non-profit organization, Hypothes.is aims to create open, interoperable, and community-driven tools to help people think, learn, and create together.

Where Is Hypothesis's Headquarters?

HQ Function

Serves as the official administrative and legal hub for the non-profit organization, handling grants, fiscal responsibilities, partnerships, and core operational management, supporting a globally distributed team.

Notable Features:

As Hypothes.is primarily operates as a distributed, remote-first organization, its physical headquarters is more an administrative point than a central office with unique architectural features. The focus is on digital infrastructure and a global, remote team.

Work Culture:

Hypothes.is fosters a remote-first, collaborative, and mission-driven work culture. Employees are passionate about open-source principles, education, and empowering users with tools for critical thinking and discussion. The culture emphasizes autonomy, transparency, and a commitment to their non-profit mission.

HQ Significance:

The San Francisco address provides a formal base in a key tech and innovation hub, facilitating connections with partners, funders, and the broader tech community, even as the team operates globally and remotely.

Values Reflected in HQ: The choice of a minimal physical footprint coupled with a strong remote-first culture reflects values of resourcefulness, accessibility, inclusivity, and leveraging global talent. The non-profit status and open-source commitment are central to its operational ethos, which is administratively anchored at this location but enacted globally by its distributed team.

Location:

Hypothes.is supports a global user base through its open-source web annotation tools. While the team is distributed, its software and services are accessible worldwide, facilitating collaborative annotation for individuals, educational institutions, researchers, and publishers across different countries and languages. Their global presence is defined by user adoption and community engagement rather than physical offices.

Street Address:

3180 18th St, Ste 300

City:

San Francisco

State/Province:

CA

Country:

USA

Where Else Does Hypothesis Operate Around the World?

No additional office locations available.

Buying Intent Signals for Hypothesis

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Who's Leading Hypothesis? Meet the Executive Team

As of April 2025, Hypothesis' leadership includes:

Dan Whaley - Founder & CEO
Nate Angell - Chief Product Officer
Heather Staines - Director Of Partnerships

Who's Investing in Hypothesis?

Hypothesis has been backed by several prominent investors over the years, including:

The Andrew W. Mellon Foundation
Alfred P. Sloan Foundation
Shuttleworth Foundation
Knight Foundation
Omidyar Network
Helmsley Charitable Trust

What Leadership Changes Has Hypothesis Seen Recently?

Hire0
Exits0

As a stable non-profit organization with a consistent leadership team, Hypothes.is has not had significant publicly announced executive hires or exits in the past 12 months. The focus remains on mission continuity and project development.

What Technology (Tech Stack) Is Used byHypothesis?

Discover the tools Hypothesis uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Hypothesis Email Formats and Examples

Hypothes.is primarily uses the [first]@[hypothes.is] email format for its team members. For general inquiries, contact forms on their website are also available.

[first]@[hypothes.is]

Format

dan@hypothes.is

Example

80%

Success rate

What's the Latest News About Hypothesis?

web.hypothes.is/blogOctober 24, 2023

Hypothes.is Is Now Available in D2L Brightspace Through a New Integration Partner, Vitro

Hypothes.is announced its availability in D2L Brightspace via a new integration partnership with Vitro, enhancing collaborative annotation capabilities for users of the Brightspace learning platform....more

web.hypothes.is/blogJune 20, 2023

Hypothes.is Welcomes Newest Publisher Partners - Spring 2023

Hypothes.is continues to expand its reach in the scholarly community by welcoming new publisher partners, enabling annotation capabilities across a wider range of academic content....more

web.hypothes.is/blogFebruary 14, 2024

Hypothesis Now Available in OpenAthens’ Federated Single Sign-On

Hypothesis announced its integration with OpenAthens' federated single sign-on service, simplifying access for users at institutions using OpenAthens for authentication....more

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