OpenChemistry
avogadrolibs
C++

Avogadro libraries provide 3D rendering, visualization, analysis and data processing useful in computational chemistry, molecular modeling, bioinformatics, materials science, and related areas.

Last updated Jul 6, 2026
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README

![Avogadro 2][Avogadro2Logo] Avogadro 2

Latest Release BSD License Codacy Badge Download Count Citation Count PRs Welcome GitHub contributors OpenCollective Backers Linux Build Windows Build macOS Build

Introduction

Avogadro is an advanced molecular editor designed for cross-platform use in computational chemistry, molecular modeling, education, bioinformatics, materials science, and related areas. It offers flexible rendering and a powerful plugin architecture.

Core features and goals of the Avogadro project include:

  • Open-source, distributed under the liberal 3-clause BSD license
  • Cross-platform, with builds on Linux, Mac OS X and Windows
  • An intuitive interface designed to be useful to the whole community
  • Fast and efficient, embracing the latest technologies
  • Extensible, making extensive use of a plugin architecture
  • Flexible, supporting a range of chemical data formats and packages
Avogadro 2 began as a rewrite of the original [Avogadro 1.x][Avogadro1], which is now unsupported. The successor is faster, better, much more stable, and [more feature-rich] (https://two.avogadro.cc/docs/whats-new-in-avogadro-2/).

Avogadro's codebase is split across a libraries repository and an application repository. The new code architecture provides a high-performance rendering engine, modern code development, and significantly improved speed and stability.

Avogadro is being developed as part of the [Open Chemistry][OpenChemistry] project by an open community, which was started at [Kitware][Kitware] as an open-source community project.

Installing

For the most up-to-date experience use the continuous builds prepared by GitHub actions for:

We also maintain a beta Flatpak for Linux that is updated with the lastest changes every week or two.

For full releases and an overview of all available ways to obtain Avogadro see the [overview][Install] on the Avogadro website.

Binaries and the source code for each release can be found on the GitHub releases page.

If you would like to build from source we recommend that you follow our [build guide][Build].

User guide

Our user documentation can be found on the Avogadro website, as well as a brief guide to getting started.

Contributing

We welcome all kinds of contributions as a community project, from bug reports, feature suggestions, language translations, Python plugins, and C++ code development.

Our project uses the standard GitHub pull request process for code review and integration. Please check our [contribution][Contribution] guide for more details on developing and contributing to the project. The GitHub issue tracker can be used to report bugs, make feature requests, etc. Our API is [documented online][API] with updated documentation generated nightly.

To introduce yourself, ask for help, or general discussion, we welcome everyone to our forum

Contributors Hall of Fame:

[Avogadro2Logo]: https://raw.githubusercontent.com/OpenChemistry/avogadrolibs/master/docs/avogadro2_64.png "Avogadro2" [OpenChemistry]: https://openchemistry.org/ "Open Chemistry Project" [OpenChemistryLogo]: https://raw.githubusercontent.com/OpenChemistry/avogadrolibs/master/docs/OpenChemistry128.png "Open Chemistry" [Kitware]: https://kitware.com/ "Kitware, Inc." [Avogadro1]: https://avogadro.cc/ "Avogadro 1" [Build]: https://two.avogadro.cc/develop/build.html "Building Avogadro" [Install]: https://two.avogadro.cc/install/ "Installing Avogadro" [Contribution]: https://two.avogadro.cc/contrib/ "Contribution guide" [API]: https://two.avogadro.cc/develop/classlist.html "API documentation"

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