This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
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Avogadro Project
avogadro.cc
did:plc:gpz6dlz4jnt7r6sxchniaxex
Advanced molecule editor and visualizer
Currently working towards Avogadro2
https://avogadro.cc/
https://discuss.avogadro.cc/