Molecular Workbench vs MoluCAD

Molecular Workbench is a free modeling tool for designing and conducting computational experiments across science. Its interactive learning environment supports science inquiry, while its authoring system lets instructional designers create and publish curriculum based on models and simulations. Users can customize simulations or create their own, with topics spanning gas laws, fluid mechanics, states of matter, chemical reactions, genetics, protein synthesis, and quantum phenomena. Activities can include assessments, student-data collection, learning monitoring, and teacher feedback. Simulations can also be embedded in blogs, wikis, or web pages. The Next-Generation Molecular Workbench brings computational experiments to browsers using HTML5. An offline version is available, but it cannot access the latest simulations or collect student data. Downloads are listed for Windows, Mac OS X, and Linux, and require Java Runtime Environment 1.5 or later. The maker says the software needs considerable computing power and may start slowly while the Java virtual machine launches. Molecular Workbench is developed and maintained by the Concord Consortium.

MoluCAD is a free Windows desktop application for molecular modeling and visualization, designed for chemistry students and originally conceived for organic chemistry study. Users can construct molecular structures in true 3D and inspect them from any viewpoint. The software creates reaction animations and includes more than 170 sample structures and animations that can be opened, viewed, and modified. Built-in MM2 energy minimization supports the modeling workflow, alongside an interactive periodic table and HTML-based help. MoluCAD imports and exports PDB, ENT, MOL, and MM3 files, and generates BMP, JPEG, and AVI files. New River Kinematics offers it as a free download through a Windows executable. The product originated in a three-year National Institutes of Health biomedical technology research project intended to produce low-cost chemistry education software. New River Kinematics, founded in 1994 and based in Williamsburg, Virginia, describes itself as an engineering company developing and supporting portable metrology software solutions.