Best Petro-SIM Alternatives ranked by AI · updated Aug 2026

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Petro-SIM is a steady-state and dynamic process simulator for refining, oil and gas, petrochemical, and energy applications. It combines petroleum property modeling with process simulation for refinery planning, optimization, and engineering studies.

Developer: Yokogawa (KBC) Price: N/A 🎯 kbc.global

Process Simulation industrial software chemical engineering oil and gas refining

Top 6 Petro-SIM alternatives

Aspen HYSYS

AspenTech

💡 Pick it for a widely adopted hydrocarbon simulator with strong dynamic modeling and a large engineering ecosystem.

Aspen HYSYS is a process simulator aimed primarily at oil, gas, refining, and energy engineers. It provides steady-state and dynamic modeling, with...

Pros

Excellent hydrocarbon and gas-processing workflows
Dynamic simulation is more integrated than in many steady-state tools
Strong refinery, LNG, and upstream engineering adoption

Cons

Less general-purpose for some specialty-chemical applications than Aspen Plus
Commercial cost is substantially higher than free DWSIM
Advanced models still require significant process-engineering expertise

N/A

Alternatives to Aspen HYSYS → Visit site

Aspen Plus

💡 Choose it when you need broader chemical-process coverage, rigorous thermodynamics, and strong design or optimization tooling.

Aspen Plus is a leading process simulation software used in various industries for engineering design and optimization.

Contact sales for pricing

Alternatives to Aspen Plus → Visit site

UniSim Design

Honeywell

💡 Pick it for dynamic studies, operator training, or close integration with Honeywell automation systems.

UniSim Design is a steady-state and dynamic process simulator for oil and gas, refining, chemicals, and power engineering teams. It combines rigorous...

Pros

Strong connection between steady-state, dynamic, and control studies
Well suited to Honeywell automation and operator-training environments
Good hydrocarbon, refining, and gas-processing support

Cons

Can be less convenient for users outside Honeywell-centered environments
Chemical-process coverage is not as broad as Aspen Plus in some areas
Commercial licensing and training can be costly

N/A

Alternatives to UniSim Design → Visit site

DWSIM

💡 Choose it for a free, cross-platform simulator suitable for learning, prototyping, and smaller process studies.

DWSIM is an open-source chemical process simulator that allows the simulation of chemical processes through a user-friendly graphical interface.

Free

Alternatives to DWSIM → Visit site

Pro/II

AVEVA

💡 Pick it for established steady-state refinery and hydrocarbon modeling, especially in AVEVA-centered engineering environments.

PRO/II is a steady-state process simulation platform for chemical, petrochemical, refining, and energy engineers. It models flowsheets using extensive thermodynamic methods and...

Pros

Broad coverage of chemical, refining, and petrochemical unit operations
Strong thermodynamic and electrolyte modeling capabilities
Established workflows for industrial engineering studies

Cons

Commercial licensing is typically less accessible than DWSIM
Interface and workflows can feel dated compared with newer cloud-oriented tools
Steeper learning curve than CHEMCAD for smaller projects

N/A

Alternatives to Pro/II → Visit site

CHEMCAD

Chemstations

💡 Choose it for a more approachable commercial simulator covering general chemical and hydrocarbon engineering workflows.

CHEMCAD is a process simulation suite for chemical, pharmaceutical, environmental, and general process engineers. It supports steady-state flowsheets, equipment sizing, heat integration,...

Pros

Generally easier to learn than PRO/II or Aspen Plus
Covers steady-state simulation, sizing, dynamics, and utility calculations
Often a practical fit for smaller engineering teams

Cons

Fewer advanced industry-specific capabilities than AspenTech platforms
Smaller ecosystem and training community than PRO/II
Less dominant for large refinery and upstream projects

N/A

Alternatives to CHEMCAD → Visit site

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