I early-released access to an API for generating interactive chord diagrams. Can be used via Python package, Rust crate, or HTTP API.

https://datacrayon.com/shop/product/chord-pro/

It's been/being used by people from many different sectors which is great to see. It's making enough to pay for 2 coffees a month, or at least to cover the server it's hosted on. If I didn't enjoy working on it, I'd factor in my time!

It started as a quick way to generate a d3-chord diagram and has slowly grown since then.