As highlighted recently SketchEl2 a chemical drawing package is now open source.
The SketchEl 2 project is underway as a desktop app, based on web technology and delivered as an Electron package. The GitHub repository is now public, on account of there being enough functionality to be arguably useful. This is a very early release, so do be ready to give some useful feedback if you feel so inclined to try it out.
The repository can be found here https://github.com/aclarkxyz/web_sketchel2