https://avogadro.cc/

Avogadro is an open-source scientific software publisher whose flagship product, Avogadro2, serves researchers, educators, and students who need to build, edit, and visualize three-dimensional molecular structures across Windows, macOS, and Linux. The toolkit is engineered for computational chemistry workflows, offering intuitive sketching tools that assemble atoms and bonds, automated geometry optimization engines that refine conformations, and support for common file formats such as CML, XYZ, PDB, and SDF. Typical use cases range from preparing ligand coordinates for docking simulations and generating input decks for quantum packages like Gaussian, ORCA, and NWChem, to creating publication-ready graphics that illustrate reaction mechanisms, protein–ligand interactions, or crystalline lattices. Plugin architecture extends the core with specialized extensions for crystallography, vibrational analysis, and electronic-property visualization, while a built-in Python console allows scripted automation of repetitive tasks. Classroom deployments benefit from the program’s lightweight footprint and multilingual interface, enabling undergraduate chemistry labs to quickly transition from 2-D textbook drawings to interactive 3-D models that can be rotated, measured, and annotated in real time. The publisher’s software is available for free on get.nero.com, where downloads are delivered through trusted Windows package sources such as winget, always installing the latest upstream release and supporting batch installation alongside complementary research tools.