Open Source

Open Source at xyflow

How and why we keep xyflow transparent, free, and MIT licensed

xyflow GitHub Star History

Open source since the beginning

We decided to open source the React Flow library in 2019. We started seeing our first users, receiving lots of bug reports and contributions early on, which allowed us to grow. More and more companies and people started to use it, which led to more maintenance work, to the point that we decided to shift our full attention to the library in 2021. A few months later, we set up a business model to support our ongoing work on the library. Now we’re happy maintainers of one of the most popular node-based UI libraries :)

We’ll keep our software MIT Licensed forever.

We chose the MIT License because we believe in Free and Open Source Software. Having this license means that anyone can use, repurpose, or resell our docs, our blog posts, or our library. We love that it allows anyone to use xyflow for their own projects, and we get to see people build things with xyflow that we never would have imagined. The MIT License also allows companies to easily use the library without having to hire a lawyer to interpret a custom license. We’ll keep our software MIT Licensed forever.

Read our license

How we fund our work

We need funding to pay for the time it takes to care for xyflow and the infrastructure around it. The way we do this is a thin-crust open-core model:

A diagram showing a circle with an outline. Inside the circle is the Free, Open Core, which contains Libraries, docs, examples, and discord. The thick outline of the circle is the Paid Crust, containing Pro examples, prioritized bug fixes, and email support.

We spend most of our time on the “core,” which is MIT Licensed (library, docs, github discussions, discord). We spend less time on the “crust,” which is the paid content and services (subscriber support, pro examples)– these are handled by our Terms of Use instead of the MIT License. This model allows us to decide the direction of the library (no investors), the core library remains free for everyone, and the financial burden of the library and ecosystem around it is placed on organizations who can afford to fund us (rather than individual developers).

More about how xyflow is funded

Supporting the open source ecosystem

We give back to the Open Source projects that we use ourselves on Open Collective and Github.

We offer free access to our Pro examples to non-commercial open source projects and students who use xyflow. If this is you, send us an email to from your student email, or send us a link to your open source project repository.