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
    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: 6,506 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: 1,223 This Week
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  • 3
    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: 209 This Week
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  • 4
    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: 97 This Week
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  • 5
    luscus

    luscus

    molecular editor and viewer

    Luscus is the program for graphical display and editing of molecular systems. The program allows fast and easy building and/or editing different molecular structures, up to several thousands of atoms large. Luscus can also visualize dipole moments, normal modes, molecular orbitals, electron densities and electrostatic potentials. In addition, simple geometrical objects can be rendered in order to point out a geometrical feature or a physical quantity. The program is developed as a graphical interface for MOLCAS program package, however it's adaptive nature makes possible using luscus with other computational program packages and chemical formats. If you use this program, please cite: G. Kovačević, V. Veryazov, J. Cheminformatics, 7 (2015) 1-10; DOI: 10.1186/s13321-015-0060-z
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    Downloads: 120 This Week
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  • 6
    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.
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    Downloads: 48 This Week
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  • 7
    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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  • 8
    JSpecView Project

    JSpecView Project

    Spectroscopy Viewer

    The JSpecView Project initially provided JAVA applets for the display of JCAMP-DX and AnIML/CML spectral files. The source and binary files are available via the Code (sourceforge SVN) and Files menu options. See the WIKI pages (Hosted Apps) for more detail. Beginning September 2018 all code changes are being handled via the Jmol Sourceforge page. The codes has been fully merged and JSmol the JavaScript/HTML5 version of Jmol now includes the non-Java version of JSpecView.
    Downloads: 17 This Week
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  • 9
    relax

    relax

    Molecular dynamics by NMR data analysis

    The software package 'relax' is designed for the study of molecular dynamics through the analysis of experimental NMR data. Organic molecules, proteins, RNA, DNA, sugars, and other biomolecules are all supported. It supports exponential curve fitting for the calculation of the R1 and R2 relaxation rates, calculation of the NOE, reduced spectral density mapping, the Lipari and Szabo model-free analysis, study of domain motions via the N-state model and frame order dynamics theories using anisotropic NMR parameters such as RDCs and PCSs, the investigation of stereochemistry in dynamic ensembles, and the analysis of relaxation dispersion data.
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    Downloads: 24 This Week
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  • 10
    An open source workbench for chemo- and bioinformatics built on the Eclipse Rich Client Platform (RCP).
    Downloads: 8 This Week
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  • 11
    Fityk
    The repository has been moved to: https://github.com/wojdyr/fityk. Fityk is nonlinear curve-fitting and data analysis software. It is specialized in fitting peaks (bell-shaped functions like Gaussian, Loretzian, Pearson7, Voigt) to experimental data.
    Downloads: 7 This Week
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  • 12
    PAScual is a data analysis suite for Positron Annihilation Lifetime Spectroscopy (PALS).
    Downloads: 10 This Week
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  • 13
    EChem++ is a software system based on an object oriented approach to electrochemical experimentation, simulation, and data analysis. Currently, development emphasis lies on the modelling and simulation as well as the analysis modules.
    Downloads: 5 This Week
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  • 14
    Facyt-quimicomp
    Software and codes created in "Laboratorio de Química Computacional" of "Facultad de Ciencias y Tecnología" of "Universidad de Carabobo"
    Downloads: 8 This Week
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  • 15
    This Excel Add-In enables working with chemical formulas, like contracting them and calculating their molar masses. Dieses Excel Add-In erlaubt das Arbeiten mit chemischen Formeln, wie das Zusammenfassen zu Summenformeln und Berechnen von molaren Massen.
    Downloads: 4 This Week
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  • 16
    JChemPaint Applet and Swing Application
    The JChemPaint Applet and Swing Application are Java programs for drawing 2D chemical structures like those found in most chemistry textbooks. It is based on the Chemistry Development Kit (cdk.sf.net). Downloads, tracker, and source code repository can be found on https://jchempaint.github.io
    Downloads: 4 This Week
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  • 17
    Java Data Processing Project aims to manipulate text file containing scientific data such as time/intensity scan or spectrum. Jdpp provide large flexibility to read all possible time duration and date format. It is originally design to treat MS data.
    Downloads: 7 This Week
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  • 18

    CS Miner

    A tool for Navigating in Chemical Space

    CS-Miner stands for Chemical Space Miner and is a software tool for navigating in chemical space of compound databases. It helps for deriving appropriate classification models and performing virtual screening. Download it via: http://csminer.com/csm/?p=7 A quick tutorial is available through: http://csminer.com/csm/?p=8
    Downloads: 6 This Week
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  • 19
    CueMol

    CueMol

    CueMol - Molecular Visualization Framework

    CueMol - Molecular Visualization Framework based on OpenGL, Mozilla XULRunner, and javascript
    Downloads: 6 This Week
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  • 20
    MCE - Marching Cube ELD

    MCE - Marching Cube ELD

    Crystallographic software for displaying voxel maps - electron density

    MCE is an crystallographic experimental program for 3D and 2D electron density map visualization. The software is mainly focused on visualization of ELD calculated from X-ray diffraction data of small molecules, but it will work for small proteins as well. Download the installation file (default download) or find in "Files" the zip-file with instant copy of the program which does not require the installation.
    Downloads: 6 This Week
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  • 21
    Mass-Up

    Mass-Up

    MALDI-TOF data analysis tool

    Mass-Up is an Open-Source mass spectrometry utility for proteomics designed to support the preprocessing and analysis of MALDI-TOF mass spectrometry data. Mass-Up includes several tools and operations to load, preprocess and analyze MALDI-TOF data.
    Downloads: 6 This Week
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  • 22
    This is a Matlab software package for single molecule FRET data analysis.
    Downloads: 3 This Week
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  • 23
    atomes

    atomes

    Analysis, visualization, edition of 3D atomistic models

    atomes is a Free (Open Source) cross-platform software licensed under the terms of the Affero GPL v3+ license. atomes is a toolbox developed to analyze, to visualize and to create/edit three-dimensional atomistic models. atomes also provides an advanced input preparation system for further calculations using well known molecular dynamics codes: - Classical MD : DL-POLY and LAMMPS - ab-initio MD : CPMD and CP2K - QM-MM MD : CPMD and CP2K atomes is developed by Dr. Sébastien Le Roux, research engineer for the CNRS Dr. Sébastien Le Roux works at the Institut de Physique et Chimie des Matériaux de Strasbourg.
    Downloads: 4 This Week
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  • 24
    Charmol

    Charmol

    Program for molecular graphics

    Charmol is a cross-platform GUI/command-line based program for making high-quality pictures of molecular structures, nowadays working on Linux, MacOS and Windows. As output, it produces POV-Ray rendered images or files in VRML format. Charmol is capable of making pictures containing: - from small- to large-size molecules - more molecules together (different settings possible) - orbitals using molden and fchk files (GTO functions up to 'h' angular momentum supported) - surfaces using gaussian cube files (also color-mapped surfaces according to potential) - schematic representation of vibrations using arrows - user-defined arrows representing vectorial properties - measuring gauges - combinations of these features (more orbitals together, orbitals and arrows together etc.) Charmol allows for fine tuning of the final molecular design.
    Downloads: 3 This Week
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  • 25
    qmol

    qmol

    A simple molecular weight calculator

    qmol is a simple molecular weight calculator, available for Linux and Windows, derived from Tomislav Gountchev's KMol. You can enter a formula, (e.g. CH3(CH2)2OH) and get its molecular weight (60.0959 g/mol) and its elemental composition (C3H8O: C 59.96; H 13.42; O 26.62 %). See the features list below for more details or consult the wiki page: https://sourceforge.net/p/qmol/wiki/Home/. For Windows binary and source code see the files section: https://sourceforge.net/projects/qmol/files/ Binary packages (rpm/deb) for openSUSE Leap 15.2-42.2, xUbuntu 20.10-19.10, 17.04, Fedora 33, CentOS 8, Scientific Linux 7, and Debian 10.0-8.0 can be found at: http://download.opensuse.org/repositories/home:/lineinthesand/
    Downloads: 1 This Week
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