Search Results for "chemical structure"
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Showing 31 open source projects for "chemical structure"
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AMBIT:Chemical Structure DB&Web Service
Chemical structures database & machine learning with web services API
AMBIT offers a cheminformatics data management for chemical substances, structures and nanomaterials. Flexible structure, similarity and study queries storage, descriptor calculation and predictive models building via REST web services.User interface for creating read across assessment and generating reports, aligned with regulatory and industrial requirements. Command line applications also available. -
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ChemCanvas
Chemical structure drawing tool
This is targeted to be the most intuitive opensource 2D chemical drawing tool. You can draw organic chemical structures and reactions very easily and quickly. Available to download for Windows and Linux (AppImage, Flatpak, Snap) -
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SDF Merger
Desktop application for merging multiple SDF files into a single SDF
...Language: Python 3 2. GUI Framework: Tkinter 3. Chemistry Library: RDKit for chemical data processing 4. File Formats: Input/Output in SDF format Citation Md. Ismiel Hossen, A. (2026). SDF Merger: A Desktop and Web Tool for Merging Chemical Structure Data Files (v1.1). Zenodo. https://doi.org/10.5281/zenodo.18291398 -
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Web-based Electronic Laboratory Notebook (ELN) with integrated Chemical Inventory by the group of Prof. Goossen (TU Kaiserslautern, Germany), based on PHP/MySQL. Allows (sub-)structure search, reaction planning, management of spectra and literature.
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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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Chem-Parser
Molecule Sketcher and Immediate Parser to Excel, .SMI and 3D SDF
Chem-Parser is an intuitive and efficient utility designed to streamline the data curation process for QSAR (Quantitative Structure–Activity Relationship) modeling and cheminformatics workflows. This versatile tool allows users to draw chemical structures, parse multiple SMILES strings, and automatically populate a structured table with associated compound names and custom-defined value tags such as biological activity or physicochemical properties. By enabling rapid structure-to-data mapping, Chem-Parser significantly reduces manual effort in dataset preparation, ensuring consistency and accuracy across large compound libraries. ... -
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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... -
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FEATool Multiphysics - FEA & CFD Toolbox
FEATool Multiphysics is an easy-to-use FEA and CFD Simulation Toolbox
FEATool Multiphysics (https://www.featool.com) is a fully integrated toolbox for computer aided engineering CAE, finite element analysis & fluid dynamics simulations. With a very easy-to-use GUI, anyone is now able to quickly set up and perform large scale dynamical and complex engineering physics simulations, with coupled fluid flow, heat transfer, structural mechanics, chemical transport, and electromagnetics effects, without having to learn complex programming. In addition to... -
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CPARAM
Calculator for Structural Parameters of Armchair-type Nanotubes.
...Therefore, a package was developed to calculate the parameters commonly associated with armchair-type nanotubes, along with their average values. The program works for one or more chemical species present in the structure. It is implemented to run in both Linux and MS Windows command-line interfaces, without the need for the user to employ any visualization software to manually specify each atom delimiting the distance. Preliminary versions of this program have been used to obtain results published in indexed journals. -
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Argo
ARGO is a program for analysis of electronic structure calculations
The `Argo' program draws its name from ancient Greek, referencing the vessel of the same name commissioned for Jason's renowned Argonauts expedition. This choice symbolizes the pursuit of making the best use of quantum chemical calculation results. ARGO facilitates the analysis of results obtained from quantum chemistry codes, specifically Gaussian. This task is achieved through a set of Python scripts. Our code is freely available throughout the academic community with the ambition to... -
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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... -
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MetExpert is an expert system to assist users with limited expertise in informatics to interpret GCMS data for metabolite identification without querying spectral databases
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MagNes
A modular C++ API for chemical structure handling and representation
MagNes is a C++ programming interface for implementation of different algorithms and graphical rendering through run-time plugins. MagNes currently provides: -A complete C++ API for managing of chemical information -A rich set of parsers (PDB, XYZ, Gaussian and many others) -An OpenGL based visor for molecular rendering. -A C++ API for implementation of Karplus-like equations for prediction of NMR scalar couplings. -
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MUSE
A Multi-algorithm Collaborative Structure-prediction Environment
MUSE is short for Multi-algorithm-collaborative Universal Structure-prediction Environment, which was developed for easy use in structure prediction of materials under ambient or extreme conditions, such as high pressure. It was written in Python and organically combined the multi algorithms including the evolutionary algorithm, the simulated annealing algorithm and the basin hopping algorithm to collaboratively search the global energy minimum of materials with the fixed stoichiometry. ... -
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Crygr
Compare and visualize charge densities from various file formats.
...Thanks to the cooperation with the author of Jana2006 Vaclav Petricek, the program supports also multipoles obtained by measurements on a diffractometer. With all those file formats available to it, it can compare and visualize the differences between various sources describing the same chemical structure. -
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Med Study Buddy
Physiology questions true-false, med-chem random cards to draw & Czech
Created to help students of medical school to study a large amount of questions. The functionality can be easily extended. -
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Chemical structure sketching tool, for use with various cheminformatics applications. Convenient to use and moderately sophisticated. Suitable for viewing, creating and editing MDL MOL files.
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RASPnmr
Protein NMR backbone resonance assignment
...Uniquely, RASP is capable of extensive assignments even in the abscence of Cbeta chemical shift information: over a test set of 154 proteins RASP assigns 88 % of residues with an accuracy of 99.7 %, using only information available from HNCO and HNCA spectra. RASP is described here: MacRaild and Norton (2014) RASP: Rapid and robust backbone chemical shift assignments from protein structure. J Biomol NMR doi:10.1007/s10858-014-9813-7 -
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ORganic Virtual Library (ORVIL) Program
ORganic VIrtual Library (ORVIL)
...ORganic VIrtual Library (ORVIL) is a perl program to generate a combinatorial library using most frequently observed 200 organic substituents. It is designed to explore the organic chemical space in the given query structure without affecting the entire backbone of the molecule enabling minimum molecular complexities. Its particular features are its simplicity to use, portable SMILES format and high speed of library construction. Benchmarking of Tamoxifen (drug for breast cancer) was performed which revealed a compound having similar architecture of known drug analogue, Toremifene. ... -
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Free Organic Chemistry Analysis and Visualisation Tool; Chemical formula editor, calculation of threedimensional molecular structures, high-quality realtime rendering, ...
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OSCAR (Open Source Chemistry Analysis Routines) is software for the semantic annotation of chemistry papers. The modules OPSIN (a name to structure converter) and ChemTok (a tokeniser for chemical text) are also available as standalone libraries.
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Protein Data Bank transformed into an SQL database with a very powerful search engine and a rich web interface. The engine combines chemical, sequence and 3D structure searches. The interface provides statistics, sequence and 3D structure alignments.
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DANGLE: A Bayesian inferential prediction method for protein backbone dihedral angles and secondary structure assignments, solely from sequence information, experimental chemical shifts and a database of known protein structures and their shifts.
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This application transcribes basic codons and tells you the amino acid it codes for, the tRNA anti-Codon, and give you a 3D structural model of the amino acid and 2D picture of its chemical structure. Analysis reports can then be printed by the user.
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Chemical Evaluation Framework (CEF) is a molecular structure based software to assist in hazard assessment. Download requires Java 6 update 1. Source code is contained in jar files. Download contains GSH reactivity plugin.
