Best Free Molecular Modeling Software

Expert-coded by chemists and engineered by computer scientists, SYNTHIA™ Retrosynthesis Software enables scientists to quickly find and easily navigate innovative and novel pathways for novel and published target molecules. Quickly and efficiently scan hundreds of pathways to help you identify the best option according to your needs. Explore the most cost-effective routes to your target molecules with state of the art visualization and filtering options. Easily customize search parameters to eliminate or promote reactions, reagents or classes of molecules. Explore unique and innovative syntheses that may be unknown for building your desired molecule. Easily generate a list of commercially available starting materials for your synthesis. Benefit from ISO/IEC 27001 Information Security Certification to guarantee the confidentiality, integrity, and protection of your data.

YASARA is a molecular graphics, modeling, and simulation program for Windows, Linux, MacOS, and Android developed in 1993, that finally makes it really easy to answer your questions. With an intuitive user interface, photorealistic graphics, and support for affordable virtual reality headsets, shutter glasses, autostereoscopic displays, and input devices, YASARA creates a new level of interaction with the 'artificial reality', that allows you to focus on your goal and forget about the details of the program. YASARA is powered by PVL (Portable Vector Language), a new development framework that provides performance way above traditional software. PVL allows you to visualize even the largest proteins and enables true interactive real-time simulations with highly accurate force fields on standard PCs, making use of GPUs if available. You can push and pull molecules around and work with dynamic models instead of static pictures.

MolView is an intuitive, Open-Source web application to make science and education more awesome! MolView is mainly intended as a web-based data visualization platform. You can use MolView to search through different scientific databases including compound databases, protein databases and spectral databases, and view records from these databases as interactive visualizations using WebGL and HTML5 technologies. This web application is built on top of the JavaScript libraries and online services listed below. The Virtual Model Kit has been a source of inspiration for the birth of this project.

ArgusLab is a molecular modeling, graphics, and drug design program for Windows operating systems. It’s getting a little dated by now, but remains surprisingly popular. To date, there are more than 20,000 downloads. ArgusLab is freely licensed. You don’t need to sign anything. You can use as many copies as you need if you are teaching a class where your students might benefit from using ArgusLab. You are not allowed to redistribute ArgusLab from other websites or sources. However, you may link to this website from your own websites if you like. A low-key effort is currently underway to port ArgusLab to the iPad. In addition, I’ve done some work with the Qt cross-platform development environment in an effort to support Mac, PC, and Linux.

Ascalaph Designer is a general-purpose program for molecular dynamic simulations. Under a single graphical environment are represented as their own implementation of molecular dynamics as well as the methods of classical and quantum mechanics of popular programs. Molecular geometry optimization with conjugate gradient methods. Shows molecular models in separate windows. Each window has two cameras, which allow the model to be simultaneously visualized from two sides and in different graphic modes. The subwindow can be opened by dragging the splitter in the right corner of each graphical window. Clicking on an atom or bond with the left mouse button slightly changes their color and a brief info about the picked object appears in the status bar. The wire-frame style is convenient for large molecules, particularly, proteins. Drawing is very fast for this style. Finally, CPK wire frame combines the properties of several above styles.

GROMACS is a free and open source suite for high-performance molecular dynamics and output analysis. It is a versatile package for simulating the Newtonian equations of motion for systems with hundreds to millions of particles, with a strong focus on materials modeling, biomolecular simulation, and particle-based systems. GROMACS is primarily designed for biochemical molecules such as proteins, lipids, and nucleic acids, which involve many complicated bonded interactions, but its speed in calculating nonbonded interactions also makes it useful for non-biological systems such as polymers and other materials. It can model ensembles of particles in liquid, solid, or gaseous states and supports a wide range of molecular dynamics workflows, from basic energy minimization and equilibration to production simulations and detailed trajectory analysis.

NAMD is a parallel molecular dynamics code designed for high-performance simulation of large biomolecular systems. Based on Charm++ parallel objects, it scales from desktop and laptop computers to high-end parallel platforms, hundreds of cores for typical simulations, and beyond 500,000 cores for the largest simulations. NAMD is built for researchers who need to simulate large molecular systems efficiently while preserving compatibility with widely used molecular modeling workflows. It uses the popular molecular graphics program VMD for simulation setup and trajectory analysis, and it is file-compatible with AMBER, CHARMM, and X-PLOR. It is designed to support biomolecular simulations involving proteins, membranes, nucleic acids, solvents, ions, and other molecular systems where atomic interactions and time-dependent motion need to be studied in detail.

ESPResSo, the Extensible Simulation Package for Research on Soft Matter, is a highly versatile open source simulation package for performing and analyzing scientific molecular dynamics and Monte Carlo many-particle simulations. It is designed as a universal tool for simulating a variety of soft matter systems, especially coarse-grained atomistic or bead-spring models used in physics, chemistry, molecular biology, and process engineering. ESPResSo can be used to simulate polymers, liquid crystals, colloids, polyelectrolytes, ferrofluids, gels, biological systems, DNA, lipid membranes, bacterial motion, and super-capacitors. In coarse-grained models, a group of atoms or molecules is treated as a single bead, allowing researchers to investigate larger time and length scales than would be practical with fully atomistic simulations. ESPResSo supports classical molecular dynamics simulations in different statistical ensembles.

PyMOL is a user-sponsored molecular visualization system on an open-source foundation, maintained and distributed by Schrödinger. PyQt interface replaces Tcl/Tk and MacPyMOL on all platforms. Better third-party plugin and custom scripting support. A comprehensive software package for rendering and animating 3D structures. A plug-in for embedding 3D images and animations into PowerPoint presentations. PyMOL is a commercial product, but we make most of its source code freely available under a permissive license. The open-source project is maintained by Schrödinger and ultimately funded by everyone who purchases a PyMOL license. Open access incentive executables. Liberal evaluation policy. Improved fuse command (disallows hypervalent bonds, substitutes monovalent atoms instead of attaching to them) Properties inspector now supports unsetting settings with the “delete” key. Fix workspace disappearing on specific display resolutions.