What ProSim does

ProSim is a French chemical engineering software company founded in April 1989 by ENSIACET professors Bernard Koehret and Xavier Joulia to commercialize process simulation software developed at the Laboratoire de Génie Chimique (CNRS/INPT/UPS) in Toulouse. The company's flagship product, ProSimPlus, is a sequential-modular steady-state simulator for continuous industrial processes, supported by an ecosystem of specialized modules: ProSimPlus HNO3 for nitric acid plants, BatchColumn and BatchReactor for batch processes, ProSec for brazed plate-fin heat exchangers, Simulis Pinch and ProSimPlus Energy for energy and water optimization, ProPhyPlus and Simulis Thermodynamics for physico-chemical property calculations, and the dynamic simulators ProSim DAC and ProSim DEP. In April 2026, ProSim launched the ProSimPlus Python API, enabling programmatic simulation driven entirely from Python.

The company sells through direct enterprise field sales augmented by a network of regional distributors (Spain/Portugal, UK, Japan, Latin America), with direct offices in Labège, France (HQ) and Philadelphia, USA (subsidiary established 2011). Revenue is generated across four streams: software licenses and subscriptions (perpetual and recurring), fixed-rate engineering studies and consulting (600+ projects delivered), training services, and combined MUTS (Maintenance, Updates, Training and Support) contracts. The customer base spans chemicals, petrochemicals, refining, oil and gas, energy (including nuclear and hydrogen), pharmaceuticals, bio-based products, and academic research, with named enterprise users including Air Liquide, EDF, Total, Sanofi, Arkema, Linde, Milliken, and Ercros, alongside 100+ universities and 1,200+ customers across 75 countries.

Since September 2023, ProSim has operated as Fives ProSim S.A.S., a subsidiary of the French industrial engineering group Fives, following an acquisition designed to accelerate international development. The company maintains deep academic ties (ENSIC, ENSIACET) and invests in collaborative R&D and doctoral theses to sustain its thermodynamic and process-modeling expertise. Most recently, in April 2026, ProSim joined Rosatom's ETC GET and IIT Bombay to launch a pilot nuclear specialist training programme in India, extending the platform into workforce-development and digital-twin applications for nuclear power.

Name

ProSim

Legal name

Fives ProSim S.A.S.

Website

https://prosim.net

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

11–50 employees

Short description

ProSim is a French chemical engineering software company, founded in 1989 and now operating as Fives ProSim after its 2023 acquisition, that sells process simulation and optimization software — led by ProSimPlus — to industrial customers in chemicals, refining, gas, energy, pharmaceuticals, and academic research worldwide.

Ownership category

akta.pro rank

Product category

Chemical Process Simulation Software

NAICS

Industrial Design Services (541420)

SIC

Services-Prepackaged Software (7372), Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Process & Batch Control Software (Recipe Management, ISA-88) (IMAGABAH)

akta.pro secondary industry

Product Lifecycle, NPI & Industrialization (Design-to-Operate) (BPAHAHAK)

Keywords

• Process simulation software
• Chemical engineering software
• Thermodynamic modeling
• Process optimization tools
• Industrial process simulation

Headquarters

HQ city

Philadelphia

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure

Revenue model

1. Software Licenses and Subscriptions: Sale of process simulation software licenses with options for perpetual or subscription-based licensing. Includes software packages like ProSimPlus, Simulis Thermodynamics, and specialized industry solutions.
2. Engineering Services: Fixed-rate process simulation studies and engineering consulting services performed by expert engineers. Services include process studies, energy audits, and custom software development. Over 600 studies already performed.
3. Training Services: Training sessions for process simulation software. Standard courses included in MUTS (Maintenance, Update, Training and Support) contracts, with on-demand personalized training available for multiple employees.
4. Maintenance and Support (MUTS): Maintenance, Updates, Training and Support services providing ongoing technical support, software updates, and Level-1 training courses.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

ProSim (Fives ProSim) develops and sells process simulation and optimization software for industrial process industries, anchored by its flagship ProSimPlus steady-state simulator and complemented by specialized modules for thermodynamics, batch processes, heat exchangers, energy efficiency, and dynamic simulation. The company also delivers fixed-rate engineering consulting studies, custom software development, training courses, and recurring Maintenance/Update/Training/Support (MUTS) contracts to its industrial and academic customers worldwide.

Product overview

Fives ProSim is a process simulation software publisher offering a comprehensive suite of tools for steady-state and dynamic simulation, thermodynamic calculations, batch processes, and energy optimization. The core product is ProSimPlus, a general-purpose steady-state process simulator complemented by specialized modules including ProSimPlus HNO3 for nitric acid plants, ProSimPlus Energy for energy efficiency, and Simulis Thermodynamics for thermodynamic property calculations. Additional products cover batch process simulation (BatchColumn, BatchReactor), heat exchanger simulation (ProSec), dynamic simulation (ProSim DAC, ProSim DEP), and energy integration (Simulis Pinch). The ProSim Suite bundles all products together, and the ProSimPlus Python API enables programmatic control of simulations. ProSim operates as part of the Fives Group since September 2023.

Differentiator

Problem solved

Functional benefit

Products and services

• ProSimPlus General-purpose steady-state process simulator for continuous industrial processes, with unique features for hydrogen, energy efficiency, and pinch analysis. Used by process engineers in chemicals, petrochemicals, refining, gas, energy, and pharmaceuticals.
• ProSimPlus Python API Python-driven process simulation enabling users to programmatically control ProSimPlus simulations, automate workflows, and integrate simulation capabilities into Python-based applications. Targeted at engineers and developers seeking automated, scriptable simulation environments.
• ProSimPlus HNO3 Specialized steady-state simulator for nitric acid production units and nitrous vapors absorption columns, targeting nitric acid process engineers and plant designers.
• ProSim Suite Bundled package combining all Fives ProSim software tools in a single practical and economical solution for customers wanting the full simulation suite.
• Simulis Thermodynamics Calculation server (Add-in) for thermodynamic properties of mixtures and fluid phase equilibria, providing extensive thermodynamic model libraries for use across simulation workflows.
• ProPhyPlus Interactive standalone software for thermodynamic properties and fluid phase equilibria calculations for pure components and mixtures, supporting engineers and researchers needing property calculations outside full process simulation.
• DIPPR L25+ Enriched version of the AIChE DIPPR database of pure component thermodynamic properties, providing reference data for process simulation and design.
• DPP Experimental data regression tool for fitting and validating thermodynamic model parameters, used by engineers and researchers to refine thermodynamic models from lab data.
• DETHERM DECHEMA thermodynamic database for pure component and mixture properties, providing reference data for process engineering calculations.
• BatchColumn Simulator for batch distillation columns, including equipment database management tools, for batch process engineers in specialty chemicals and pharmaceuticals.
• BatchReactor Simulator for batch chemical reactors, including kinetic parameters fitting tools and equipment database management, targeted at batch process engineers in specialty chemicals and pharmaceuticals.
• ProSec Simulator for brazed plate-fin heat exchangers (multi-stream, typically brazed aluminum) running in steady-state within the ProSimPlus environment, used by heat exchanger designers and process engineers.
• ProSimPlus Energy Simulation and optimization software for energy efficiency of steady-state industrial processes, used by process and energy engineers seeking to reduce energy consumption and improve sustainability.
• Simulis Pinch Energy integration tool using pinch technology to reduce water and energy consumption in industrial processes, used by process engineers for energy and water optimization projects.
• ProSim DAC Dynamic simulator for adsorption columns, predicting how process variables change over time, used by process engineers modeling transient adsorption operations.
• ProSim DEP Dynamic simulator for depressurization units, predicting transient behavior during emergency depressurization scenarios, used by safety and process engineers for safety analysis.
• Engineering Studies and Consulting Services Fixed-rate process simulation studies and engineering consulting services performed by ProSim expert engineers, including process studies, energy audits, and custom software development, offered to industrial customers typically under NDA.
• Energy Audits Energy audit services for industrial customers, designed to identify energy efficiency improvement opportunities across plant operations, delivered by ProSim's expert engineers.
• Custom Software Development Custom software development services delivered by ProSim engineers to address client-specific simulation and process modeling needs, offered as a professional service engagement.
• Training Courses Training sessions for ProSim process simulation software. Standard Level-1 courses are included in MUTS (Maintenance, Update, Training and Support) contracts, while personalized on-demand training is available for customer teams.
• Maintenance, Update, Training and Support (MUTS) Contract Recurring service contract bundling software maintenance, updates, Level-1 training courses, and ongoing technical support for ProSim software customers.

Quantifiable outcome

• Over 600 engineering studies performed for clients
• +2 more outcomes

Named customers10 records

Segments7 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

AI capability1 record

Feature9 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Rosatom (ETC GET)coreStrategic or Co-development Partner · 15 April 2026Rosatom State Corporation, through its subsidiary ETC GET, has partnered with IIT Bombay and ProSIM R&D Pvt Ltd to launch a pilot nuclear specialist training programme in India. The initiative addresses India's critical gap in nuclear workforce availability, as the country's nuclear energy expansion plans by 2047 will require thousands of trained specialists annually. The first trial session runs from April 15-17, 2026, at IIT Bombay, focusing on simulator and digital twin technologies for nuclear power plants.
• IIT BombaycoreStrategic or Co-development Partner · 14 April 2026IIT Bombay has partnered with Rosatom's ETC GET and ProSIM R&D Pvt Ltd for a pilot nuclear specialist training programme. The collaboration focuses on simulator and digital twin technologies for nuclear power plants, with the first session scheduled for April 15-17, 2026.
• De Dietrich IbéricaminorChannel Partner/ Reseller/ DistributorRegional distributor for Spain and Portugal, promoting Fives ProSim products in the Iberian Peninsula from their office in Alcorcón, Madrid.
• ICONIC SimulationminorChannel Partner/ Reseller/ DistributorRegional representative for United Kingdom, located in Bristol, promoting Fives ProSim products in the UK market.
• Simulation Technology (Japan)minorChannel Partner/ Reseller/ DistributorRegional distributor for Japan, located in Yokohama, promoting Fives ProSim products in the Japanese market.
• AguiVel ConsultancyminorChannel Partner/ Reseller/ DistributorRegional representative for Latin America, providing sales and consultancy services for Fives ProSim products.
• Outnova SolutionsminorChannel Partner/ Reseller/ DistributorRegional representative for Peru and Latin America, located in Lima, promoting Fives ProSim products.
• Fives GroupcoreStrategic or Co-development PartnerIn September 2023, ProSim joined the international engineering group Fives and became Fives ProSim S.A.S. This partnership establishes the company's long-term activity and accelerates its international development.

Scale indicators6 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Aspen Technology (AspenTech): Market leader in process simulation (Aspen HYSYS, Aspen Plus) serving the same chemicals, refining and gas customers as ProSim with overlapping steady-state and dynamic simulation capability.
• AVEVA: Industrial software provider whose PRO/II process simulator competes directly with ProSimPlus in the chemicals and hydrocarbons design market, with similar steady-state and thermodynamic capabilities.
• Honeywell UniSim: Honeywell's process simulation suite (UniSim Design) targets the same process engineer buyer in refining, gas processing and petrochemicals with comparable steady-state simulation.
• Process Systems Enterprise (PSE): Developer of gPROMS process modeling platform — a direct competitor for advanced and dynamic process simulation in chemicals, energy and pharma applications.
• KBC (Yokogawa): KBC's process simulation and consulting software (now part of Yokogawa) targets refining and petrochemical process engineers with comparable simulation and optimization offerings.

Broad incumbents

• Siemens Simcenter / COMOS: Siemens' broader industrial digital-twin portfolio (Simcenter, COMOS) overlaps with process simulation as part of a wider plant-engineering suite, competing against ProSim in process industry digitalization.
• Schneider Electric (SimSci / ROMeo): Through its SimSci (PRO/II heritage) and ROMeo dynamic simulation assets, Schneider Electric competes in the same industrial process simulation market as ProSim.

Emerging players

• Chemstations: Developer of ChemCAD, a steady-state process simulator competing with ProSimPlus in chemical engineering simulation for both educational and industrial users.
• Modelon: Specialist in Modelica-based dynamic simulation and digital twins for energy, process and aerospace — adjacent emerging competitor to ProSim's dynamic simulators (DAC/DEP).

Others

• Wolfram Research (Mathematica): General-purpose technical computing platform used by process engineers for thermodynamic and chemical engineering calculations, offering an alternative compute layer to ProSim's specialized simulation tools.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/prosim

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 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 ProSim