# STEWART COMPUTATIONAL CHEMISTRY, L.L.C. - **Website:** - **Primary alias:** `openmopac.net` - **Employees:** 2+ - **Location:** Colorado Springs, Colorado, United States ## Description Stewart Computational Chemistry, L.L.C. Their flagship product, MOPAC (Molecular Orbital PACkage), is a highly advanced and widely used semiempirical quantum chemistry program. Based on Dewar and Thiel's NDDO approximation, MOPAC offers accurate calculations and simulations for a range of chemical systems. One of the key features of MOPAC is its user-friendly Graphical User Interface, which makes it accessible to a wide range of users. The latest version, MOPAC2016, includes enhanced handling of biomolecules and improved accuracy in handling large organic compounds and solids. Users can also benefit from the modified PM7 program, which eliminates errors in NDDO theory for large systems and reduces errors in organic compounds. Stewart Computational Chemistry is dedicated to continuous development and maintenance of their programs. Users can access a comprehensive manual and browse through recent publications to stay updated with the latest research and improvements. The brand provides consistent support and encourages cooperative development through their platform. Experience the cutting-edge technology of Stewart Computational Chemistry and unleash the power of computational chemistry for your research and simulations. ## Industries - 🧪 Science and Education - 🧪 Chemistry _(under Science and Education)_ ## Logos & icons - logo _(primary)_ — PNG — [download](https://cdn.brandfetch.io/id3WqpJX_5/w/1200/h/1200/theme/dark/logo.png?c=1bxid64Mup7aczewSAYMX&t=1747660826401) ## Colors | Name | Hex | Theme | | --- | --- | --- | | Malibu | #60c4ff | accent | | Deep Koamaru | #11116b | dark | | Melrose | #bdbdff | light | --- _Source: _ _See [/llms.txt](/llms.txt) for a full list of agent-readable pages, and [/auth.md](/auth.md) for how agents authenticate._