- https://openapi-generator.tech/
- https://github.com/zijianhuang/openapiclientgen
- https://github.com/deepmap/oapi-codegen
I swear I've come across a few others while looking for the best web visualizer (mostly settled on Redoc), but I'm not finding them on https://openapi.tools/ or http://openapi.toolbox.apievangelist.com, so perhaps they've been abandoned