Isoform is a CAD system based on Signed Distance Functions.
Work in progress. Current status is it is not anywhere near ready to use.
Isoform runs in the browser using WebGL.
You can run it locally:
$ git clone https://github.com/jes/isoform
$ xdg-open isoform/index.html
Or try out a hosted version: https://incoherency.co.uk/isoform/
