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Developer OpenBabel development team
Latest release 2.1.1 / July 7, 2007
OS Cross-platform
Genre Cheminformatics/Molecular modelling
License GNU General Public License

OpenBabel is free software, a chemical expert system mainly used for converting chemical file formats. Due to the strong relationship to informatics this program belongs more to the category cheminformatics than to molecular modelling. It is available for Windows, Unix, and Mac OS. It is distributed under the GNU GPL.

The project's stated goal is: "Open Babel is a community-driven scientific project assisting both users and developers as a cross-platform program and library designed to support molecular modeling, chemistry, and many related areas, including interconversion of file formats and data."



OpenBabel and JOELib were derived from the OELib Cheminformatics library. In turn, OELib was based on ideas in the original chemistry program Babel and an unreleased object-oriented library called "OBabel."

Major features

  • chemical expert system
  • interconversion of many chemical file formats
  • substructure search (based on SMARTS)
  • fingerprint calculation
  • Python wrapper
  • Perl wrapper

See also

Free software Portal


  • The Blue Obelisk-Interoperability in Chemical Informatics, Rajarshi Guha, Michael T. Howard, Geoffrey R. Hutchison, Peter Murray-Rust, Henry Rzepa, Christoph Steinbeck, Jörg K. Wegner, and Egon L. Willighagen, J. Chem. Inf. Model.; 2006; doi:10.1021/ci050400b
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "OpenBabel". A list of authors is available in Wikipedia.
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