Reaction Design

What Reaction Design does

Reaction Design is a privately-held software simulation tool provider founded in 1995 and headquartered in San Diego, California. The firm develops clean technology software targeting the transportation and energy sectors, indicating a specialization in chemistry, combustion, or reaction-based modeling relevant to emissions analysis, fuel efficiency, and clean-energy applications. With a headcount of 11-50 employees, Reaction Design operates as a small specialist within the broader engineering simulation software market.

The company's go-to-motion relies on enterprise software sales typical of niche simulation tool providers; pricing is not publicly disclosed and requires direct sales engagement. Reaction Design is led by founder and Executive VP David H Klipstein, reflecting a founder-led organizational structure that has persisted since inception. The firm serves customers in transportation and energy verticals where physics- and chemistry-based modeling is integral to clean technology development.

Detailed financial, customer, partnership, and competitive information specific to Reaction Design is not present in the input material; the bulk of enriched data pertains to a separate entity (Ansys, recently acquired by Synopsys) and is not attributable to Reaction Design under the source-scoping rules. Reaction Design's market position appears to be that of a focused niche player in clean technology simulation software, with a modest operational footprint relative to large enterprise simulation vendors.

Name

Reaction Design

Legal name

Not determinable from source - source data is for Ansys, not Reaction Design

Website

https://reactiondesign.com

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

11–50 employees

Short description

Reaction Design is a San Diego-based private software firm founded in 1995 that develops clean technology simulation tools for the transportation and energy sectors. The founder-led company operates with 11-50 employees as a niche specialist.

Ownership category

akta.pro rank

Headquarters

HQ city

San Diego

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales

Distribution channels9 records

Marketing channels9 records

Core offering

Reaction Design is a software simulation tool provider that develops clean technology solutions for the transportation and energy sectors. The company delivers simulation software used by engineering teams to model chemical and physical processes, with an emphasis on combustion and reactive flow modeling for fuel and energy applications.

Product overview

Ansys provides a comprehensive portfolio of engineering simulation software organized across multiple domains including Fluids (CFD), Electronics (electromagnetic analysis), Structures (structural mechanics), Optics (photonics), 3D Design, and specialized applications. The platform includes flagship products like Ansys Fluent (computational fluid dynamics), Ansys HFSS (high-frequency electromagnetics), Ansys Mechanical (structural analysis), and Ansys Discovery (rapid 3D design exploration), alongside specialized tools for specific industries such as Ansys LS-DYNA (crash and impact simulation), Ansys Motor-CAD (electric motor design), and Ansys Zemax OpticStudio (optical design). The company offers AI-powered capabilities through AnsysGPT for virtual technical support. Ansys operates as a platform-plus-modules architecture with products available across cloud and desktop deployments, and now united with Synopsys to provide engineering solutions from silicon to systems.

Differentiator

Problem solved

Functional benefit

Products and services

• Ansys Chemkin-Pro Chemical kinetics software for combustion and chemical reaction modeling, used by engineers in transportation and energy sectors to simulate fuel chemistry and reactive flow processes.
• Ansys Forte Detailed engine combustion simulation software for internal combustion engines, used in transportation applications for clean engine design.
• Ansys Model Fuel Library Validated fuel property database for combustion simulations, used by transportation and energy engineers to model fuel chemistry.

Quantifiable outcome

• 9x reduction in development time
• +2 more outcomes

Named customers5 records

Segments8 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature12 records

Partnerships

Five partnerships are on record, tiered flagship and core.

• SynopsysflagshipStrategic or Co-development PartnerSynopsys and Ansys have united to create the leader in engineering solutions from silicon to systems. This represents a strategic merger combining Synopsys' electronic design automation with Ansys' simulation capabilities to provide comprehensive engineering solutions spanning the full product lifecycle.
• Technology PartnerscoreTechnology or IntegrationStrategic technology partners providing product integrations and technology interoperability with Ansys simulation platforms.
• Channel PartnerscoreChannel Partner/ Reseller/ DistributorGlobal network of channel partners that resell and distribute Ansys solutions to customers across various regions and market segments.
• Services PartnerscoreImplementation/ SI/ Consulting PartnerServices partners providing consulting, implementation, and professional services to support Ansys customer deployments.
• Academic PartnerscoreStrategic or Co-development PartnerEducational institutions participating in academic programs with special licensing, research collaborations, and student engagement initiatives.

Scale indicators3 records

Direct peers

• MathWorks: MathWorks' MATLAB and Simulink are widely used in transportation and energy for control systems and physics-based modeling, overlapping with Reaction Design's simulation use cases.
• ESI Group: ESI specializes in simulation for manufacturing, transportation and energy (crash, welding, composites, CFD). It is a direct competitor for engineering simulation dollars in Reaction Design's core verticals.
• COMSOL: COMSOL is a multiphysics simulation software vendor covering fluid, structural, thermal, electromagnetic, and chemical reaction physics — directly comparable to Reaction Design's stated simulation focus for clean-tech, transportation and energy applications.

Broad incumbents

• Dassault Systèmes: Dassault Systèmes provides SIMULIA structural/CFD simulation and the 3DEXPERIENCE platform, serving transportation and energy OEMs with multiphysics solvers comparable to Reaction Design's offering.
• Siemens Digital Industries Software: Siemens offers STAR-CCM+ (CFD/multiphysics), NX CAE, and Simcenter tools for transportation and energy simulation. It competes broadly with Reaction Design across fluid, thermal and structural analysis.
• Ansys: Ansys is the dominant engineering simulation platform (Fluent, HFSS, Mechanical, Chemkin-Pro) serving automotive, aerospace, energy and electronics. It is a broad incumbent — note that the original Reaction Design entity was acquired by Ansys in 2014 and Ansys continues to sell Chemkin-Pro/Forte chemical kinetics tools.
• Altair Engineering: Altair provides HyperWorks and Inspire simulation suites used in automotive and energy industries, with strong overlap to Reaction Design's multiphysics simulation target customers.
• Hexagon (MSC Software): Hexagon's MSC Software (Nastran, Adams, Marc) provides structural and multibody dynamics simulation used by transportation OEMs, directly comparable to Reaction Design's engineering simulation scope.

Regional players

• Cadence Design Systems: Cadence provides electronic design automation and increasingly system-level simulation for chips and electronics, adjacent to Reaction Design's simulation offerings, particularly where clean-tech systems intersect with embedded electronics.
• Synopsys: Synopsys recently acquired Ansys and now combines EDA with Ansys simulation, targeting silicon-to-system workflows relevant to Reaction Design's clean-tech and transportation customers.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat1 record

Key risks5 records

Key highlights4 records

Customer concentration

• Xx.com/Reaction_Design
• YouTubeyoutube.com/user/ansysinc
• Facebookfacebook.com/ansysinc
• LinkedInlinkedin.com/company/reaction-design
• Instagraminstagram.com/ansys_inc

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Reaction Design