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Avogadro2 2.1.0

A free and open source molecular editor and visualization tool.

filecart Windows Updated Oct 23, 2026
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About Avogadro2

Avogadro is an advanced free and open source molecular editor and visualization tool.
It is highly capable and designed for use in computational chemistry, molecular modeling, chemistry education, bioinformatics, materials science, and related areas.
It offers flexible high-quality rendering, a modern UI with native styling, and a powerful plugin architecture.
Avogadro is designed for cross-platform use and is fully supported on Windows, Linux, and macOS.

License: BSD-3-Clause
Release info Update on Oct 23, 2026
Release notes We are pleased to announce the latest release of Avogadro, including piles of bug fixes and many feature enhancements. Thanks to many for suggestions, bug reports, translations, and discussions. Avogadro is built from the community, and we appreciate all the help.
Avogadro v2 was designed for fast modern rendering and improved stability. It is a platform to make it easy to build the next generation of molecular and materials visualization and editing tools. If you haven't used an Avogadro2 beta (1.95 through 1.103) you will find many new features.
Highlights (tldr)
- New plugin system will load menu commands, input generators, file formats, energy and electrostatic models, including installation of any required libraries and tools using [pixi](https://pixi.prefix.dev/latest/installation/) on Mac and Windows. (Highly recommended on Linux too)
- New plugin install window and index, including over 20 plugins (and growing)
- Includes a variety of ML potentials, charge assignment using AM1-BCC and ABCG2, building nanotubes and surface slabs, generating disordered ice unit cells, and many more.
- Easy to build and customize with Python - link to a wide variety of packages
- Faster geometry optimizations ~50% faster on all models, and up to 5-10x faster on large molecules using UFF.
- Added a faster protocol for using external energy models, including ML potentials, XTB, and more.
- Added a simple molecular dynamics mode to the AutoOpt tool, including with energy models.
- Improved ORCA input generator, including syntax highlighting
- [Revised, updated documentation](https://two.avogadro.cc/docs/)
? Features
- Add keyboard shortcuts for next file (Ctrl+Tab) and previous file (Ctrl+Shift+Tab) @brockdyer03 (#795)
- Add keyboard shortcuts for going forward / backwards in animations @ghutchis (#2760)
- If the molecule changes (e.g., plugin) render a new cube @ghutchis (#2731)
- Allow user-options metadata to be "dynamic" and call the script @ghutchis (#2703)
- Add support...
Related tags chemistry molecular
Listing datawinget

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