Who We Are

The Open Transit Software Foundation (OTSF) is a non-profit organization dedicated to open source transit software and technology, initially formed in order to provide governance for the OneBusAway project.

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OTSF is the organizational and legal home for the OneBusAway project. OneBusAway is a suite of open source transit information tools based on real-time vehicle data.


Our members include government agencies, educational institutions, companies, non-profits, and individual contributors. A stable governance system ensures the reliability and longevity of our projects.

Become a Member

Organizations and individuals actively involved with OneBusAway, as users, researchers, developers, contributors, or transit activists are encouraged to join us. Contact us to get involved.

Make a Donation

OTSF is a 501(c)(3) non-profit organization, and all U.S. donations are tax-deductible. We rely on support from donations and voluntary license fees for operational expenses.

Partner With Us

We ❤️ open source transit software. We want to work with your organization to improve the entire open source ecosystem. We’ve worked with projects such as Open Trip Planner (OTP) and The Transit Clock, and we’d love to hear from you.

Submit a Project for Sponsorship

Our charter is set up to allow us to take on additional open source transit software projects. Contact us if you think your project aligns with our mission, and could benefit from a formal governance structure and non-profit status.