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PyMOL vs MolView: catalog facts
PyMOL	MolView
Freemium The open-source build is free; Schrödinger's PyMOL bundles require a purchased license.	Free Free to use in the browser.
Windows, macOS, Linux	Web
Long-established molecular visualization tool Raytraced rendering of molecular structures	Sketcher and 3D viewer in one browser page Searches PubChem by name, similarity and substructure
Official installer bundles need a paid license Aimed at scientific users rather than casual learners	Needs a browser and an internet connection Some calculations use Jmol, which is slower than the default engine
Downloadable app	Web application
Open source	Closed source
License: Python-2.0	License not stated
No account needed	No account needed
Works offline	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.