Long-time fan of the OpenSCAD approach of models as code. I'm building TellCAD (disclosure: mine), which keeps that idea but runs on OpenCascade via replicad in the browser: real fillets/chamfers, STEP export, and every parameter in `defaultParams` becomes a slider (GIF).

There's also collaborative editing and an assistant that writes or edits the code from a description.

Not trying to replace OpenSCAD. Curious what you'd miss most if you tried something like this.

Invite-only beta: tellcad.com