I built a free browser-based chemical structure editor called MolSketch. The idea is pretty simple: chemists and students can draw chemical structures, convert image, SMILES and CAS numbers into structures, and export them without installing software or creating an account. The product itself is working and it has attracted users organically, but lately growth has started to stall. So I'm trying to figure out what I should focus on next rather than just adding more features. For a niche ...