Q-Chem Inc
Q-Chem develops commercial quantum chemistry software using ab initio methods for molecular modeling, serving academic researchers, government agencies, and commercial R&D teams in pharmaceuticals and materials science globally.
- Company typePrivate
- Founded1993
- HeadquartersPleasanton, United States
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What Q-Chem Inc does
Q-Chem, Inc. is a privately held scientific software company founded in 1993 and headquartered in Pleasanton, California, that develops commercial quantum chemistry software for molecular modeling using ab initio quantum mechanical methods. Its core product, Q-Chem, provides a comprehensive computational chemistry library including over 200 density functionals (DFT), post-Hartree-Fock electron correlation methods (coupled cluster, MP2 variants, configuration interaction), excited-state calculations (TDDFT, CIS, EOM-CC), nuclear-electronic orbital methods, molecular dynamics, solvation/embedding models, and spectroscopy simulation (X-ray, resonance Raman, ECD). The company distinguishes itself through an open-teamware development model with over 100 active developers across 9 countries who contribute new methods and features to the codebase.
Q-Chem's product portfolio centers on the Q-Chem software platform with version 6.4 (December 2025) as the current major release, supplemented by Q-Cloud (AWS-based cloud deployment), IQmol (graphical user interface), BrianQC (NVIDIA GPU acceleration module), and QMP (maintenance program subscriptions). The business model is subscription-based annual licensing with tiered configurations — single research group, multi-group, site license, and add-on GPU modules — supplemented by a freemium one-month fully-featured trial. Distribution occurs through direct quote-based sales, authorized resellers, and self-serve cloud sign-up.
The company serves academic research institutions and government research agencies as primary segments, with commercial pharma/chemicals/materials companies and chemistry education programs as secondary segments. Use cases span drug discovery, materials science, computational spectroscopy, protein-ligand interactions, and transition metal complex modeling. The company operates with a small 11-50 employee base and has been bootstrapped since founding with no disclosed institutional funding; leadership comprises President Prof. Anna Krylov (USC), COO Dr. Evgeny Epifanovsky, and Scientific Advisor Prof. Martin Head-Gordon (Berkeley), with a board that includes Drs. Yuezhi Mao and Joonho Lee.
Q-Chem Inc firmographics
Firmographics- Name
- Q-Chem Inc
- Legal name
- Q-Chem, Inc.
- Website
- https://q-chem.com
- Company type
- Private
- Founded year
- 1993
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Q-Chem develops commercial quantum chemistry software using ab initio methods for molecular modeling, serving academic researchers, government agencies, and commercial R&D teams in pharmaceuticals and materials science globally.
- Ownership category
- akta.pro rank
Q-Chem Inc industry classification
Industry- Product category
- Computational Chemistry Software
- NAICS
- Software Publishers (51321), Software Publishers (5132)
- akta.pro primary industry
- Quantum Chemistry & Materials Modeling (HDAGADAA)
Keywords
Where Q-Chem Inc is headquartered
LocationHeadquarters
- HQ city
- Pleasanton
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Q-Chem Inc business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure
Revenue model
- Software Licenses: Q-Chem generates revenue primarily through licensing its quantum chemistry software. Licenses are sold to academic institutions, government agencies, and commercial organizations with various tiers based on user group size and computational capacity needs.
- QMP Subscriptions: Q-Chem Maintenance Program (QMP) provides software updates, technical support, and access to new releases. These are subscription-based annual or multi-year contracts.
- Q-Cloud Cloud Computing: Q-Chem offered through AWS cloud infrastructure allowing users to run calculations without local installation, providing subscription-based cloud access.
- BrianQC GPU Module: Optional GPU acceleration module add-on for NVIDIA GPU computing, sold as part of license packages with various GPU count options from 1 to unlimited GPUs.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Single Research Group License - Covers one principal investigator and their group members |
| Subscription | Annual | Multi-Group License - For multiple research groups or large groups with multiple PIs |
| Subscription | Annual | Site License - All research groups on a single campus |
| Unit Pricing | Annual | BrianQC GPU Acceleration Add-on |
| Freemium | Pay-as-you-go | Free Trial License |
| Subscription | Monthly | Q-Cloud Cloud Access |
Go-to-market motion2 records
Distribution channels5 records
Marketing channels7 records
Q-Chem Inc product offering
Product offeringCore offering
Q-Chem develops, maintains, and licenses a comprehensive commercial quantum chemistry software package used to perform ab initio electronic structure calculations on molecular systems. The software combines density functional theory, wavefunction-based electron correlation methods, excited-state techniques, spectroscopy simulation, molecular dynamics, and solvation/embedding models into a single integrated package, sold via subscription licenses to academic, government, and commercial research organizations.
Product overview
Q-Chem Inc offers Q-Chem as its primary unified quantum chemistry software product—a comprehensive computational chemistry package featuring a vast library of methods including DFT (200+ functionals), electron correlation methods, excited-state calculations, spectroscopy modeling, and molecular dynamics. The product portfolio includes Q-Cloud for AWS-based cloud deployment, IQmol as a graphical user interface, the BrianQC GPU acceleration module for NVIDIA GPUs, and the QMP Subscription for ongoing maintenance and support. Q-Chem follows an open-teamware development model allowing global research groups to contribute code.
Differentiator
Problem solved
Functional benefit
Products and services
- Q-Chem Quantum Chemistry Software Integrated ab initio quantum chemistry package providing DFT (200+ density functionals), electron correlation methods, excited-state calculations, spectroscopy modeling, molecular dynamics, and solvation models. Licensed via subscription to academic, government, and commercial research organizations performing electronic structure calculations on molecular systems.
- Q-Chem 6.4
Quantifiable outcome
- Sub-kcal/mol accuracy achievable with new ωB97L-V double-hybrid functional for metal-organic reaction barrier heights
- +1 more outcomes
Companies that use Q-Chem Inc
Customer profileSegments4 records
Ideal customer profiles3 records
Q-Chem Inc technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration5 records
AI capability2 records
Feature12 records
Q-Chem Inc partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- BrianQCcoreBrianQC provides GPU acceleration module for Q-Chem enabling NVIDIA GPU computing. The partnership offers specialized algorithms tailored for GPU architecture for one- and two-electron integral calculations, DFT exchange-correlation, Hartree-Fock, and coupled perturbed HF calculations. Available as optional add-on with various GPU configurations.
- IQmolcoreIQmol is a free graphical molecular viewer and editor that interfaces with Q-Chem. Provides easy-to-use interface for building molecules, setting up calculations, and visualizing results. Available for download and integrated with Q-Chem trial and purchase.
Scale indicators7 records
Recent moves6 records
Expansion highlights6 records
Q-Chem Inc competitors and assessment
Company assessmentBroad incumbents
- Cadence Molecular Sciences (OpenEye): Cadence Molecular Sciences (formerly OpenEye Scientific) provides computational chemistry and molecular modeling tools used in drug discovery. It overlaps with Q-Chem in serving pharma computational chemists, though its emphasis is on conformer generation, docking, and ligand-based methods rather than ab initio quantum chemistry.
- Dassault Systèmes BIOVIA: Dassault BIOVIA offers broad materials science and life sciences modeling platforms (including Discovery Studio and Materials Studio) that incorporate quantum chemistry capabilities as part of wider enterprise workflows. It overlaps with Q-Chem in serving commercial pharma and materials R&D customers, though BIOVIA's value proposition is platform-level rather than method-level differentiation.
Emerging players
- PySCF: PySCF is a Python-based open-source electronic structure program with strong adoption in algorithmically-focused academic groups and growing use in industry workflows. It overlaps with Q-Chem's core DFT and post-HF capabilities and benefits from Python ecosystem integration attractive to ML-oriented researchers.
- Molcas/OpenMolcas: OpenMolcas is an open-source multiconfigurational quantum chemistry package focused on CASSCF, CASPT2, and related methods for strongly correlated systems. It is partially comparable to Q-Chem on electronic structure methods, with particular overlap in spectroscopy modeling where both packages have invested in EOM-CC and related approaches.
- Exabyte.io: Exabyte.io is a cloud-native materials informatics platform that integrates electronic structure codes for materials R&D. It is a partial competitor and partial channel for Q-Chem-style quantum chemistry methods, particularly relevant as Q-Chem invests further in cloud delivery via Q-Cloud.
- Psi4: Psi4 is an open-source quantum chemistry package developed by a consortium of academic groups with capabilities in DFT, coupled-cluster, and SAPT methods. It overlaps with Q-Chem on methodology and academic target users, and represents the open-source competitive threat to Q-Chem's academic license base.
Direct peers
- Schrödinger, Inc. Schrödinger is a leading computational chemistry software company serving pharmaceutical and materials science customers. It directly competes with Q-Chem in quantum chemistry-based molecular modeling while offering a broader, more integrated platform including force fields, FEP+, and LiveDesign workflow tools.
- Gaussian, Inc. Gaussian is one of the longest-established commercial quantum chemistry packages, used widely in academic and government research for ab initio and DFT calculations. It directly overlaps with Q-Chem on electronic structure methods and shares the same target customer base of computational chemists.
- Wavefunction, Inc. (Spartan): Wavefunction produces the Spartan molecular modeling suite, which serves academic and industrial chemists with computational chemistry and visualization tools. It is already a listed partner of Q-Chem and directly overlaps in quantum chemistry modeling for academic teaching and research use cases.
Others
- ChemAxon: ChemAxon provides cheminformatics and molecular visualization tools to pharmaceutical and academic users. It is adjacent rather than directly competitive with Q-Chem's electronic structure focus, but shares the chemistry-software ecosystem that Q-Chem customers operate within.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Q-Chem Inc social profiles
Digital presenceQ-Chem Inc compliance and trust
Trust signalCompliance1 record
Q-Chem Inc financial estimates
Financial estimateRevenue estimate
Valuation estimate
Q-Chem Inc leadership team
Management profileNumber of profiles
Q-Chem Inc funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Q-Chem Inc M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Q-Chem Inc
What does Q-Chem Inc do?
Q-Chem develops, maintains, and licenses a comprehensive commercial quantum chemistry software package used to perform ab initio electronic structure calculations on molecular systems. The software combines density functional theory, wavefunction-based electron correlation methods, excited-state techniques, spectroscopy simulation, molecular dynamics, and solvation/embedding models into a single integrated package, sold via subscription licenses to academic, government, and commercial research organizations.
Is Q-Chem Inc a public or private company?
Q-Chem Inc is a private company. It is classified as unknown and is currently operating.
When was Q-Chem Inc founded?
Q-Chem Inc was founded in 1993. It employs 11 to 50 people.
Where is Q-Chem Inc based?
Q-Chem Inc is headquartered in Pleasanton, United States, in the North America region.
How does Q-Chem Inc make money?
Four revenue lines are on record. Software Licenses are the primary driver. The others are QMP Subscriptions, Q-Cloud Cloud Computing and brianQC GPU Module.
Who are Q-Chem Inc's main competitors?
Broad incumbents on record are Cadence Molecular Sciences (OpenEye) and Dassault Systèmes BIOVIA. Emerging players are PySCF, Molcas/OpenMolcas, Exabyte.io and Psi4. Direct peers are Schrödinger, Inc., Gaussian, Inc. and Wavefunction, Inc. (Spartan). ChemAxon is listed as an others.
Does Q-Chem Inc have an API?
No public API is recorded for Q-Chem Inc.
What industry is Q-Chem Inc in?
Q-Chem Inc's product category is Computational Chemistry Software. Its primary akta.pro industry code is HDAGADAA, Quantum Chemistry & Materials Modeling. Its NAICS code is 51321.