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Open Philanthropy

Open Philanthropy Market Share Analysis for November 2025

Although we have typically emphasized the importance for effective philanthropy of long-term commitment to causes and getting the right people in place, the most obvious day-to-day decision funders face is whether to support specific potential giving opportunities. As part of our internal guidance for program officers, we’ve collected a series of questions that we like […]

Science and Education > Philosophy

Domainopenphilanthropy.org

Year Founded2014

Employees51 - 200

Annual Revenue$2M - $5M

Open Philanthropy

Open Philanthropy (including company regionals)

openphilanthropy.org

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Open Philanthropy Revenue up to November 2025 is 2M - 5M

revenue generated by Open Philanthropy top domains

Open Philanthropy top domains revenue over 3 years

Revenue for Open Philanthropy top domains

openphilanthropy.org2M - 5M

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Total visits to Open Philanthropy's top domains

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Total visits last 3 months

Subsidiaries Breakdown

openphilanthropy.org114.2K

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Avg. visit duration in Open Philanthropy's top domains

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Average visit duration last 3 months

Subsidiaries Breakdown

openphilanthropy.org00:01:12

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Avg. pageviews on Open Philanthropy's top domains

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Average page views last 3 months

Subsidiaries Breakdown

openphilanthropy.org2.16

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Open Philanthropy top competitors by domain

Top similar sites in November 2025, ranked by their affinity

effectivealtruism.orgCompany NameEffective AltruismEmployees51 - 200HQUnited Kingdom, OxfordAnnual revenue--Total visits737.5KScience and Education > Philosophy

Top technologies used by Open Philanthropy

These are the website technologies, by industry, used by Open Philanthropy top domains

Widget (5)

Twemoji

Payment & Currencies (4)

Visa

Content Management System (3)

WordPress

Advertising (2)

PubMatic

More Technologies

12

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News & Signals from Open Philanthropy

With Similarweb Sales signals alerts, you’ll receive daily updates of recognized buying signals whenever new opportunities or threats arise in your target audience.

NewsOpen Philanthropy invested into Nucleic Acid Observatory in funding on Jul 25th '25.Nucleic Acid Observatory has recently received funding from Open Philanthropy to expand its scope: Nucleic Acid Observatory is now aiming to take on the problem of early warning from end to end.

NewsOpen Philanthropy invests into Cosmik $1M in grant funding.We're proud to announce that Cosmik has been awarded a total of $1M in grant funding from Open Philanthropy and the Astera Institute!

NewsOpen Philanthropy hires Justin Sandefur.After an extremely competitive hiring round, Open Philanthropy is excited to announce that Open Philanthropy has hired Justin Sandefur to lead the program.