Calypso

  • Level of openness 3 ★★★
  • Document quality 2 ★★☆

An application for prediction of stable and metastable structures from a chemical composition. This application applies particle swarm optimization to predict material structures from results of the first-principles calculation by external packages (VASP, CASTEP, Quantum Espresso, GULP, SIESTA, CP2k). It has been applied to predict not only three-dimensional crystal structures, but also those of clusters and surfaces.

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Cambridge Structure Database (CSD)

A fee-charging structure database of organic materials crystal structures. Three-dimensional structure data of small molecules and metal-organic crystals determined by the X-ray diffraction measurement can be downloaded. The data are compiled and distributed by the Cambridge Crystallographic Data Centre (CCDC).

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CASINO

  • Level of openness 3 ★★★
  • Document quality 1 ★☆☆

An open-source application for electronic structure calculation based on the diffusion Monte Carlo method. By using output of other packages of first-principles quantum-chemical calculation, this package performs electronic structure calculation with high accuracy. Although its computational cost is high, various physical quantities can be evaluated very accurately. It implements an efficient parallelization algorithm, and supports massively parallel computing.

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CASTEP

  • Level of openness 0 ☆☆☆
  • Document quality 3 ★★★

Software for first-principles calculation based on pseudo-potential and plane-wave basis. This software performs electronic-state calculation of various systems by density functional theory, and can treat structure optimization, excited-state analysis, and so on. This software can be applied to many physical phenomena such as catalysis reaction, calculation of phase diagram, etc. There are many users of this payware in the world.

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CCCM

  • Level of openness 3 ★★★
  • Document quality 2 ★★☆

CCCM is a high-order CCM (coupled cluster method) code for lattice spin systems. It is possible to obtain the ground state and its energy of quantum spin systems in two or three dimensions.

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cdview

  • Level of openness 3 ★★★
  • Document quality 2 ★★☆

An open-source application for visualization of many-particle systems. With simple operation by graphical user interface (GUI) or by command line, this application can visualize particle positions obtained from molecular dynamics simulation as well as three-dimensional scalar quantities such as potential energies. It supports various display options on kinds and shapes of particles, and can also visualize bond formation between particles.

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Chainer

  • Level of openness 3 ★★★
  • Document quality 3 ★★★

An open-source library for machine learning. Various functions on machine learning/deep learning are implemented in this package. Using flexible user-friendly description, various types of networks from simple to complex ones can be implemented. GPGPU parallel computation based on CUDA is also supported.

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CHARMM

  • Level of openness 0 ☆☆☆
  • Document quality 2 ★★☆

A general-purpose application for molecular dynamics simulation equipped with many tools. This package was originally developed for biomolecules (peptides, proteins, nuclear acids, etc.), and the current version can perform molecular dynamics simulation for various systems such as solutions, crystals, membranes, and so on. It supports several sampling methods and calculation of free energy. It also supports various computing environments including both serial and parallel computers.

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ChemBio3D/Chem3D

  • Level of openness 0 ☆☆☆
  • Document quality 2 ★★☆

A payware for modeling and visualizing molecules. This software includes a standard editor, ChemDraw, and can perform modeling from chemical structural formula. It implements structure optimization and molecular dynamics by molecular mechanics, and provides useful GUIs for MOPAC, Jaguar, GAMESS, and Gaussian. It can also perform spectroscopy analysis. It is included in high-end packages such as ChemBioOffice and ChemOffice.

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CIF2Cell

  • Level of openness 3 ★★★
  • Document quality 1 ★☆☆

CIF2Cell is a tool to generate a crystal structure part of an input file of first-principles calculation software from crystal structure data file in CIF format. It supports various first-principles calculation codes such as ABINIT, Quantum Espresso, and VASP.

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