Quick Overview
- 1#1: Aspen Plus - Leading steady-state process simulation software for designing, optimizing, and analyzing chemical processes across industries.
- 2#2: Aspen HYSYS - Advanced dynamic and steady-state simulation tool for modeling real-time chemical process operations and safety analysis.
- 3#3: UniSim Design - Comprehensive process simulation suite for steady-state and dynamic modeling of chemical plants and refineries.
- 4#4: AVEVA PRO/II Simulation - Robust steady-state process simulator for rigorous modeling of chemical, refining, and gas processing operations.
- 5#5: CHEMCAD - User-friendly chemical process simulation software for flowsheeting, equipment sizing, and process optimization.
- 6#6: gPROMS Process - Advanced process modeling platform for steady-state and dynamic simulations with custom unit operations.
- 7#7: ProMax - Specialized simulation software for natural gas processing, acid gas removal, and cryogenic plants.
- 8#8: SuperPro Designer - Process simulation tool optimized for bioprocessing, pharmaceuticals, and batch chemical manufacturing.
- 9#9: DWSIM - Open-source CAPE-OPEN compliant process simulator for steady-state chemical engineering calculations.
- 10#10: COCO Simulator - Free CAPE-OPEN flowsheet simulator with integrated thermodynamic property packages for process design.
Tools were chosen and ranked based on technical excellence, feature depth (steady-state and dynamic modeling), user-friendliness, and value, ensuring they meet the diverse needs of professionals from beginners to experts.
Comparison Table
This comparison table assesses top chemical process software tools such as Aspen Plus, Aspen HYSYS, UniSim Design, AVEVA PRO/II Simulation, CHEMCAD, and others, guiding readers to understand their unique features, practical uses, and key capabilities. It offers a clear overview to help engineers, designers, and teams evaluate which tool aligns best with their project requirements, whether for simulation, optimization, or detailed process analysis.
| # | Tool | Category | Overall | Features | Ease of Use | Value |
|---|---|---|---|---|---|---|
| 1 | Aspen Plus Leading steady-state process simulation software for designing, optimizing, and analyzing chemical processes across industries. | enterprise | 9.7/10 | 9.9/10 | 7.2/10 | 8.8/10 |
| 2 | Aspen HYSYS Advanced dynamic and steady-state simulation tool for modeling real-time chemical process operations and safety analysis. | enterprise | 9.3/10 | 9.6/10 | 7.8/10 | 8.7/10 |
| 3 | UniSim Design Comprehensive process simulation suite for steady-state and dynamic modeling of chemical plants and refineries. | enterprise | 8.7/10 | 9.3/10 | 8.2/10 | 7.9/10 |
| 4 | AVEVA PRO/II Simulation Robust steady-state process simulator for rigorous modeling of chemical, refining, and gas processing operations. | enterprise | 9.2/10 | 9.7/10 | 8.0/10 | 8.5/10 |
| 5 | CHEMCAD User-friendly chemical process simulation software for flowsheeting, equipment sizing, and process optimization. | specialized | 8.5/10 | 8.7/10 | 9.2/10 | 8.4/10 |
| 6 | gPROMS Process Advanced process modeling platform for steady-state and dynamic simulations with custom unit operations. | enterprise | 8.4/10 | 9.2/10 | 6.8/10 | 7.6/10 |
| 7 | ProMax Specialized simulation software for natural gas processing, acid gas removal, and cryogenic plants. | specialized | 8.4/10 | 9.2/10 | 7.6/10 | 8.0/10 |
| 8 | SuperPro Designer Process simulation tool optimized for bioprocessing, pharmaceuticals, and batch chemical manufacturing. | specialized | 8.4/10 | 8.7/10 | 8.9/10 | 8.1/10 |
| 9 | DWSIM Open-source CAPE-OPEN compliant process simulator for steady-state chemical engineering calculations. | other | 8.2/10 | 8.0/10 | 7.5/10 | 10/10 |
| 10 | COCO Simulator Free CAPE-OPEN flowsheet simulator with integrated thermodynamic property packages for process design. | other | 7.6/10 | 8.2/10 | 6.4/10 | 9.8/10 |
Leading steady-state process simulation software for designing, optimizing, and analyzing chemical processes across industries.
Advanced dynamic and steady-state simulation tool for modeling real-time chemical process operations and safety analysis.
Comprehensive process simulation suite for steady-state and dynamic modeling of chemical plants and refineries.
Robust steady-state process simulator for rigorous modeling of chemical, refining, and gas processing operations.
User-friendly chemical process simulation software for flowsheeting, equipment sizing, and process optimization.
Advanced process modeling platform for steady-state and dynamic simulations with custom unit operations.
Specialized simulation software for natural gas processing, acid gas removal, and cryogenic plants.
Process simulation tool optimized for bioprocessing, pharmaceuticals, and batch chemical manufacturing.
Open-source CAPE-OPEN compliant process simulator for steady-state chemical engineering calculations.
Free CAPE-OPEN flowsheet simulator with integrated thermodynamic property packages for process design.
Aspen Plus
enterpriseLeading steady-state process simulation software for designing, optimizing, and analyzing chemical processes across industries.
Aspen Properties system with proprietary electrolyte wizards and rate-based distillation for unmatched accuracy in challenging separations
Aspen Plus is the industry-leading steady-state process simulation software from AspenTech, widely used for modeling, designing, optimizing, and troubleshooting chemical processes across sectors like oil & gas, petrochemicals, pharmaceuticals, and specialty chemicals. It features an extensive library of thermodynamic models, unit operations, and reactors, enabling accurate predictions of process behavior under various conditions. The software supports everything from conceptual design to detailed engineering, with advanced tools for heat integration, economics, and sustainability analysis.
Pros
- Vast database of over 10,000 pure components and advanced thermodynamic models for highly accurate simulations
- Comprehensive suite of unit operations, reactors, and optimization tools including genetic algorithms and NLP solvers
- Seamless integration with Aspen Capital Cost Estimator and other AspenTech suite for full lifecycle analysis
Cons
- Steep learning curve requiring significant training for new users
- High computational demands necessitating powerful hardware
- Expensive enterprise licensing with complex procurement process
Best For
Professional chemical engineers and process teams in large industrial firms needing precise, scalable simulations for complex processes.
Pricing
Enterprise licensing model with custom quotes; annual subscriptions typically range from $15,000-$50,000+ per concurrent user, plus maintenance fees.
Aspen HYSYS
enterpriseAdvanced dynamic and steady-state simulation tool for modeling real-time chemical process operations and safety analysis.
Advanced assay characterization and petroleum refining workflows for precise crude oil modeling
Aspen HYSYS is a premier steady-state and dynamic process simulation software from AspenTech, widely used for designing, optimizing, and troubleshooting chemical processes in oil & gas, refining, and petrochemical industries. It offers extensive thermodynamic property packages, unit operations libraries, and advanced modeling tools for accurate process predictions. Users can perform heat and material balances, equipment sizing, and safety analysis, with seamless integration for upstream to downstream workflows.
Pros
- Unmatched accuracy in thermodynamic modeling and process simulations
- Robust support for both steady-state and dynamic analyses
- Extensive integration with AspenTech suite and third-party tools like Excel
Cons
- Steep learning curve for new users
- High cost prohibitive for small firms
- Resource-heavy for large-scale simulations
Best For
Large engineering firms and refineries in oil & gas needing enterprise-grade process simulation and optimization.
Pricing
Enterprise licensing starts at $20,000+ per user annually, with site-wide and custom contracts for organizations.
UniSim Design
enterpriseComprehensive process simulation suite for steady-state and dynamic modeling of chemical plants and refineries.
Integrated steady-state and dynamic simulation environment allowing real-time transitions without model rebuilding
UniSim Design by Honeywell is a leading process simulation software suite for steady-state and dynamic modeling of chemical engineering processes. It enables users to design, optimize, and analyze complex plants in industries such as oil & gas, refining, petrochemicals, and LNG. With extensive thermodynamic packages, unit operations, and advanced optimization tools, it supports everything from conceptual design to operator training simulators.
Pros
- Comprehensive library of thermodynamic models and unit operations
- Seamless steady-state to dynamic simulation workflow
- Strong integration with Honeywell's control systems and operator training tools
Cons
- High enterprise-level pricing
- Steep learning curve for advanced dynamic features
- Limited open customization options compared to academic tools
Best For
Process engineers in hydrocarbon processing industries needing robust steady-state and dynamic simulation for plant design and optimization.
Pricing
Enterprise licensing model; annual subscriptions start at ~$10,000+ per user, with custom quotes based on modules and seats—contact Honeywell for details.
AVEVA PRO/II Simulation
enterpriseRobust steady-state process simulator for rigorous modeling of chemical, refining, and gas processing operations.
Advanced petroleum assay management and crude oil characterization for accurate refinery simulations
AVEVA PRO/II Simulation is a premier steady-state process simulation software tailored for the oil & gas, refining, and chemicals industries. It provides rigorous modeling of unit operations, equipment sizing, and thermodynamic properties to optimize plant design, operations, and debottlenecking. With a vast library of over 2,000 components and advanced regression tools, it delivers high-fidelity results for complex hydrocarbon processes.
Pros
- Extensive thermodynamic database with rigorous models for hydrocarbons
- Comprehensive unit operations and equipment sizing/rating capabilities
- Seamless integration with AVEVA's engineering ecosystem
Cons
- Steep learning curve for new users
- Limited dynamic simulation compared to competitors
- High licensing costs for smaller organizations
Best For
Chemical and process engineers in refining and petrochemical industries requiring precise steady-state simulations for design and optimization.
Pricing
Enterprise licensing model; annual subscriptions or perpetual licenses starting at $10,000+ per seat, with pricing customized via quote.
CHEMCAD
specializedUser-friendly chemical process simulation software for flowsheeting, equipment sizing, and process optimization.
Seamless integration of steady-state and dynamic simulation in a single intuitive graphical environment
CHEMCAD is a versatile chemical process simulation software developed by Chemstations, designed for steady-state and dynamic modeling of chemical processes. It offers a graphical flowsheeting interface for building simulations, extensive thermodynamic databases, and tools for equipment sizing, optimization, and economic evaluation. Widely used in academia, consulting, and industry for process design, troubleshooting, and training.
Pros
- Intuitive drag-and-drop interface simplifies model building
- Broad library of unit operations and property methods
- Strong support for dynamic simulations and batch processes
Cons
- Fewer advanced optimization tools compared to top competitors like Aspen Plus
- Limited integration with third-party data historians
- Steeper learning curve for complex dynamic models
Best For
Ideal for chemical engineering students, educators, and small-to-medium firms needing user-friendly process simulation without enterprise-level complexity.
Pricing
Perpetual licenses start at ~$5,000 for academic versions and $15,000+ for professional; annual subscriptions from $3,000/user.
gPROMS Process
enterpriseAdvanced process modeling platform for steady-state and dynamic simulations with custom unit operations.
Equation-oriented, object-oriented modeling environment enabling fully custom, high-fidelity unit operations beyond standard libraries
gPROMS Process, developed by Process Systems Enterprise (PSE), is a leading equation-oriented process modeling and simulation software for chemical engineers. It excels in steady-state and dynamic simulations, process design, optimization, and operability analysis for complex industrial processes like reactors, separations, and multiphase systems. The platform supports custom model development with high-fidelity physics, making it suitable for R&D and plant-wide studies.
Pros
- Rigorous equation-based modeling for accurate representation of complex phenomena
- Powerful optimization and sensitivity analysis tools
- Extensive library of unit operations and customizable models
Cons
- Steep learning curve requiring strong modeling expertise
- Less intuitive graphical interface compared to flowsheet-based tools
- High licensing costs limiting accessibility for smaller teams
Best For
Experienced chemical engineers and process modelers in R&D, optimization, and advanced process design roles at large industrial firms.
Pricing
Enterprise licensing model with pricing upon request; typically starts at $10,000+ annually per user, with perpetual options available.
ProMax
specializedSpecialized simulation software for natural gas processing, acid gas removal, and cryogenic plants.
Proprietary BSX thermodynamic package for precise modeling of acid gas systems and amine absorption
ProMax, developed by Bryan Research & Engineering (BRE), is a specialized process simulation software for natural gas processing, hydrocarbon treating, and related oil & gas operations. It excels in modeling complex thermodynamic behaviors in sour and acid gas systems, supporting unit operations like amine sweetening, dehydration, fractionation towers, and LNG processes. Widely used for design, optimization, and debottlenecking in gas plants, it provides rigorous calculations backed by proprietary models validated against field data.
Pros
- Exceptionally accurate thermodynamics for sour/acid gas systems with proprietary models like BSX
- Comprehensive unit operation library tailored to gas processing and treating
- Strong optimization tools and Excel integration for sensitivity analysis
Cons
- Limited applicability outside hydrocarbon/gas processing (not ideal for general chemicals)
- Steep learning curve for non-experts due to specialized focus
- Higher cost may deter small consultancies or academic users
Best For
Process engineers in oil & gas specializing in natural gas sweetening, dehydration, and fractionation plant design.
Pricing
Perpetual or annual licenses starting at ~$10,000-$20,000 depending on modules; custom quotes via BRE sales.
SuperPro Designer
specializedProcess simulation tool optimized for bioprocessing, pharmaceuticals, and batch chemical manufacturing.
Recipe procedure editor for precise batch process sequencing and scheduling
SuperPro Designer, developed by Intelligen, Inc., is a process simulation software tailored for modeling, optimizing, and economically evaluating integrated chemical, biochemical, pharmaceutical, and food processes. It excels in handling both continuous and batch operations, including complex multiphase systems with solids, and provides detailed material/energy balances, equipment sizing, and profitability analysis. The tool supports recipe-based simulations, making it particularly strong for bioprocesses and non-traditional chemical applications.
Pros
- Integrated process-economic modeling with detailed costing
- Superior handling of batch recipes and solids processing
- Intuitive drag-and-drop flowsheeting interface
Cons
- Less advanced thermodynamic models than competitors like Aspen Plus
- Limited customization for highly specialized unit operations
- Primarily Windows-based with no native cloud support
Best For
Process engineers in biotech, pharma, and food industries focused on batch operations and quick economic feasibility studies.
Pricing
Perpetual licenses start at ~$12,000-$25,000 based on modules, plus ~20% annual maintenance.
DWSIM
otherOpen-source CAPE-OPEN compliant process simulator for steady-state chemical engineering calculations.
Full CAPE-OPEN compliance, allowing seamless integration and unit operation exchange with other commercial and open-source simulators.
DWSIM is a free, open-source chemical process simulator designed for modeling steady-state and dynamic simulations of chemical engineering processes. It offers a comprehensive library of unit operations, thermodynamic property packages, and reactors, making it suitable for flowsheet design and optimization. Cross-platform compatibility (Windows, Linux, macOS) and CAPE-OPEN interface support enable integration with other tools, positioning it as an accessible alternative to commercial software like Aspen Plus or HYSYS.
Pros
- Completely free and open-source with no licensing costs
- Cross-platform support and CAPE-OPEN compliance for extensibility
- Robust thermodynamic models and unit operations library
Cons
- Steeper learning curve for complex simulations compared to polished commercial tools
- Limited official support and community-driven updates
- Performance can lag in very large-scale simulations
Best For
Students, educators, researchers, and small engineering firms seeking a cost-free process simulation tool without enterprise-level demands.
Pricing
100% free and open-source (no paid tiers or subscriptions).
COCO Simulator
otherFree CAPE-OPEN flowsheet simulator with integrated thermodynamic property packages for process design.
Full CAPE-OPEN compliance, enabling seamless plug-and-play integration with third-party unit operations, thermodynamics, and reactors from other compliant software.
COCO Simulator is a free, open-source, CAPE-OPEN compliant flowsheet simulator designed for steady-state chemical process simulations. It enables users to model process units, select thermodynamic property packages from its integrated libraries, and perform calculations for mass and energy balances. Primarily targeted at education, research, and lightweight industrial applications, it supports modular flowsheeting via its COFE (CAPE-OPEN Flowsheet Environment) interface.
Pros
- Completely free and open-source with no licensing costs
- CAPE-OPEN compliance for easy integration with other simulation tools
- Robust thermodynamic model library including electrolyte and advanced packages
Cons
- Limited to steady-state simulations; no dynamic modeling capabilities
- Dated graphical user interface that may feel clunky
- Steeper learning curve for non-experts due to technical terminology and setup requirements
Best For
Chemical engineering students, educators, and researchers seeking a no-cost tool for steady-state process flowsheeting and thermodynamic calculations.
Pricing
Free (open-source, no paid tiers or subscriptions).
Conclusion
The reviewed chemical process software suite showcases a diverse array of tools, each with distinct strengths; however, Aspen Plus emerges as the top choice, excelling in steady-state simulation and cross-industry application. Aspen HYSYS follows closely, standing out for its advanced handling of real-time operations and safety analysis, while UniSim Design impresses with its comprehensive approach to both steady-state and dynamic modeling of complex facilities. Together, these top three tools represent the pinnacle of the field, offering solutions tailored to varied process needs.
Discover Aspen Plus to harness its industry-leading simulation capabilities, or explore HYSYS or UniSim Design for your specific dynamic or comprehensive modeling demands—each tool serves as a vital resource in optimizing chemical processes.
Tools Reviewed
All tools were independently evaluated for this comparison