Browse free open source Chemistry software and projects below. Use the toggles on the left to filter open source Chemistry software by OS, license, language, programming language, and project status.

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  • 1

    smina

    Scoring and Minimization with AutoDock Vina

    A fork of AutoDock Vina that is customized to better support scoring function development and high-performance energy minimization. smina is maintained by David Koes at the University of Pittsburgh and is not directly affiliated with the AutoDock project.
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    Downloads: 1,880 This Week
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  • 2
    Jmol

    Jmol

    An interactive viewer for three-dimensional chemical structures.

    Over 1,000,000 page views per month. Jmol/JSmol is a molecular viewer for 3D chemical structures that runs in four independent modes: an HTML5-only web application utilizing jQuery, a Java applet, a stand-alone Java program (Jmol.jar), and a "headless" server-side component (JmolData.jar). Jmol can read many file types, including PDB, CIF, SDF, MOL, PyMOL PSE files, and Spartan files, as well as output from Gaussian, GAMESS, MOPAC, VASP, CRYSTAL, CASTEP, QuantumEspresso, VMD, and many other quantum chemistry programs. Files can be transferred directly from several databases, including RCSB, EDS, NCI, PubChem, and MaterialsProject. Multiple files can be loaded and compared. A rich scripting language and a well-developed web API allow easy customization of the user interface. Features include interactive animation and linear morphing. Jmol interfaces well with JSpecView for spectroscopy, JSME for 2D->3D conversion, POV-Ray for images, and CAD programs for 3D printing (VRML export).
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    Downloads: 1,000 This Week
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  • 3
    Avogadro

    Avogadro

    An intuitive molecular editor and visualization tool

    Avogadro is an advanced molecular editor designed for cross-platform use in computational chemistry, molecular modeling, bioinformatics, materials science and related areas. It offers a flexible rendering framework and a powerful plugin architecture.
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    Downloads: 963 This Week
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  • 4
    Open Babel
    Open Babel is a chemical toolbox designed to speak the many languages of chemical data. It's an open, collaborative project allowing anyone to search, convert, analyze, or store data from molecular modeling, chemistry, biochemistry, or related areas
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    Downloads: 511 This Week
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  • 5
    nmrshiftdb2
    nmrshiftdb2 is a NMR database (web database) for organic structures and their nuclear magnetic resonance (nmr) spectra. It allows for spectrum prediction (13C, 1H and other nuclei) as well as for searching spectra, structures and other properties. The nmrshiftdb2 software is open source, the data is published under an open content license. The core of nmrshitdb2 are fully assigned spectra with raw data and peak lists (we have pure peak lists as well). Those datasets are peer reviewed by a board of reviewers. The project is supported by a scientific advisory board. nmrshiftdb2 is part of the NFDI4Chem initiative (https://nfdi4chem.de/) and will provide a component for a curated repository there. Please consult the documentation for more detailed information.
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    Downloads: 1,028 This Week
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  • 6
    DWSIM - Open Source Process Simulator

    DWSIM - Open Source Process Simulator

    Simulate chemical processes using advanced thermodynamic models

    DWSIM is an open source, CAPE-OPEN compliant chemical process simulator for Windows, Linux and macOS systems. Written in VB.NET and C#, DWSIM features a comprehensive set of unit operations, advanced thermodynamic models, support for reacting systems, petroleum characterization tools and a fully-featured graphical interface. DWSIM Pro is a commercial sibling of DWSIM built on top of open-source software. It offers extended features, comes with private support, and is accessible in the cloud. Visit simulate365.com for details.
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    Downloads: 767 This Week
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  • 7
    Toxtree: Toxic Hazard Estimation

    Toxtree: Toxic Hazard Estimation

    Toxicity prediction for chemical compounds

    A GUI application which estimates toxic hazard of chemical compounds. The latest version includes the following toxicity prediction modules: -Cramer rules (oral toxicity) -Toxicity mode of action via Verhaar scheme -Skin irritation and Eye irritation prediction -Benigni / Bossa rulebase for mutagenicity and carcinogenicity prediction -START biodegradation and persistence prediction -Skin sensitisation reactivity domain -Kroes TTC Decision tree -SMARTCyp - Cytochrome P450-Mediated Drug Metabolism and metabolites prediction -Structure Alerts for the in vivo micronucleus assay in rodents (ISSMIC) -Structural Alerts for Functional Group Identification (ISSFUNC) -Structural alerts associated with covalent protein binding and DNA binding. - Ames mutagenicity Toxtree provides a plugin framework to incorporate different approaches to the estimation. Platform independent (written in Java), with the use of The Chemistry Development Kit.
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    Downloads: 199 This Week
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  • 8
    Gabedit is a Graphical User Interface for FireFly (PC-Gamess), Gamess-US, Gaussian, Molcas, Molpro, MPQC, NWChem, OpenMopac, Orca, PSI4 and Q-Chem computational chemistry packages.
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    Downloads: 172 This Week
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  • 9
    KherveFitting

    KherveFitting

    Fit X-ray Photoelectron Spectroscopy (XPS) and XAS data

    โš ๏ธ KherveFitting has moved. New releases will no longer be published here. Download the latest version from https://khervetools.com or directly from GitHub: https://github.com/KherveFitting/KherveFitting/releases/latest. This SourceForge page is kept for archival/older versions only. YouTube Channel: https://www.youtube.com/@xpsexamples-imperialcolleg6571
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    Downloads: 134 This Week
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    ChemCrow

    ChemCrow

    Chemcrow

    ChemCrow is an AI-powered framework designed to assist in chemical research and discovery. It integrates AI models with chemical knowledge bases to provide intelligent recommendations for synthesis planning, reaction prediction, and material discovery. This tool helps automate and accelerate research in computational chemistry and drug development.
    Downloads: 19 This Week
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  • 11
    PyMca
    Stand-alone application and Python tools for interactive and/or batch processing analysis of X-Ray Fluorescence Spectra. Graphical user interface (GUI) and batch processing capabilities provided.
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    Downloads: 99 This Week
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  • 12
    ShelXle

    ShelXle

    ShelXle is a Qt GUI for SHELXL

    ShelXle combines an editor with syntax highlighting for the SHELXL-associated .ins (input) and .res (output) files with an interactive graphical display for visualization of a three-dimensional structure including the electron density (Fo) and difference density (Fo-Fc) maps. See J. Appl. Cryst. (2011). 44, 1281โ€“1284. for details.
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    Downloads: 218 This Week
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  • 13
    GenX

    GenX

    X-Ray and Neutron Reflectivity Modeling

    GenX is a scientific program to refine x-ray refelcetivity, neutron reflectivity and surface x-ray diffraction data using the differential evolution algorithm. GenX is very modular and highly extensible and can be used as a general fitting program.
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    Downloads: 114 This Week
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  • 14
    OSRA is a utility designed to convert graphical representations of chemical structures and reactions, as they appear in journal articles, patent documents, textbooks, trade magazines etc., into SMILES or SD file format- a computer recognizable molecular structure You can find links to the binary executables here: https://sourceforge.net/p/osra/wiki/Download/
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    Downloads: 80 This Week
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  • 15
    RasTop is a molecular graphics program intended for the visualisation of proteins, nucleic acids and small molecules based on the popular Rasmol software. The program is aimed at the rapid visualization and analysis of molecules.
    Downloads: 73 This Week
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  • 16
    ASCEND modelling environment
    ASCEND is a modelling environment and solver for large or small systems of non-linear equations, for use in engineering, thermodynamics, chemistry, physics, mathematics and biology. Solvers for both steady and dynamic (NLA & DAE) problems, are provid
    Downloads: 20 This Week
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  • 17
    Downloads: 107 This Week
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  • 18

    XDrawChem

    XDrawChem is an application for chemistry drawing and analysis.

    XDrawChem is an application for drawing and analyzing chemical structures and reactions. Please visit the website for full details. Download source and binary releases here, and clone the source from GitHub at the external link above.
    Downloads: 58 This Week
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  • 19
    MSCC Applications  Support

    MSCC Applications Support

    Materials and Computational Chemistry applications on HPC platform

    Five software i.e. AMDKIIT , ANN-CI, LITESOPH, MTASpec, and ยต2mech are developed as an outcome of the Materials and Computational Chemistry (MSCC) project under the National Supercomputing Mission (NSM). These are the set of codes (software) developed by the investigators to perform the computations to study the properties of atoms, molecules, clusters, alloys, bio-molecules, and composite materials using high-performance computing (HPC). For more information on the softwares developed under MSCC please go to: https://sourceforge.net/p/mscc-applications-nsm/wiki/ To download the versions of the MSCC softwares installed on NSM HPC systems please go to: https://github.com/mscc07/mscc To download the test input dataset please go to: https://github.com/mscc07/mscc-testinput For training material please go to: http://www.youtube.com/@mscctraining
    Downloads: 74 This Week
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  • 20
    MoCalc2012

    MoCalc2012

    GUI for MOPAC, DFTB+, GAMESS, Firefly, NWChem, ORCA and PSI4

    MoCalc2012 is a simple, efficient Graphical User Interface for MOPAC, DFTB+, GAMESS(US), Firefly, NWChem, ORCA and PSI4.
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    Downloads: 24 This Week
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  • 21
    This project has moved. Please follow the WWW link below.
    Downloads: 65 This Week
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  • 22
    NMRShiftDB
    NMRShiftDB is an open-source, open-access, open-submission, open-content web database for chemical structures and their nuclear magnetic resonance data.
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    Downloads: 62 This Week
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  • 23
    Molsketch

    Molsketch

    2D molecule editor

    Molsketch is a 2D molecular editing tool. Its goal is to help you draw molecules quick and easily. Of course you're creation can be exported afterwards in high quality in a number of vector and bitmap formats.
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    Downloads: 33 This Week
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  • 24
    harwellxps-armoury-for-casaxps

    harwellxps-armoury-for-casaxps

    Plugin host for CasaXPS XPS analysis, from the UK national XPS service

    HarwellXPS Armoury is a free plugin host for CasaXPS, built by HarwellXPS, the UK's national XPS facility at the Research Complex at Harwell. It runs alongside CasaXPS and adds tools for everyday XPS work. The public release includes: - XPS Import: bring instrument files into CasaXPS and assign spectra to samples and experiments - Plotter: quick, publication-ready plots of your spectra - Lineshape Tester: check how a lineshape behaves before using it in a fit Further plugins are offered as separate downloads. All plugins are signed by HarwellXPS, and Armoury only loads approved, signed plugins. Windows only. Unzip and run HarwellXPS-Armoury.exe; no installer needed. If Armoury helps your research, please acknowledge HarwellXPS in your publications. Grant codes and more at harwellxps.uk.
    Downloads: 56 This Week
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  • 25
    An open source workbench for chemo- and bioinformatics built on the Eclipse Rich Client Platform (RCP).
    Downloads: 18 This Week
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