ProMax vs DWSIM

PProMax6.9Visit DWSIM6.9Visit

P ProMax #6 in Chemical Software 6.9/10 Pricing on request ✓ 0 of 5 features Visit ProMax

vs

DWSIM #7 in Chemical Software 6.9/10 Free plan Free plan✓ 1 of 5 features Visit DWSIM

• ProMax fits best

  Gas-processing and acid-gas simulation teams

• DWSIM fits best

  Teams wanting free, flexible process simulation

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Side by side

Feature	PProMax 6.9/10 Visit ↗	DWSIM 6.9/10 Visit ↗
At a glance
Editor score	6.9	6.9
Ranking	#6 in Chemical Software	#7 in Chemical Software
Best for	Gas-processing and acid-gas simulation teams	Teams wanting free, flexible process simulation
Pricing model	Paid	Free
Starting price	Not published	Not published
Free plan	Not published	✓ (best)
Free trial	—	—
Deployment	Desktop	Desktop, Mobile
Platforms	Windows	Windows, macOS, Linux, Android
Support	Email, Phone, Docs	Docs, Community
Integrations	4 integrations	1 integrations
Built for	Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features ProMax 0/5 · DWSIM 1/5
SDS management	Not published	—
Chemical inventory	Not published	—
Formulation management	Not published	—
Regulatory compliance	Not published	—
Mobile access	Not published	✓ (best)
Specs
Deployment	Not published	On-premises
Our review
Pros	Models acid-gas removal with amine solvents and reaction kinetics. Connects models to PI, OPC-HDA, ODBC databases, and Excel. Combines optimization with pipeline, corrosion, and emissions tools.	Models flowsheets with thermodynamic packages and unit operations Supports both steady-state and dynamic simulation Runs on Windows, macOS, Linux, and Android
Cons	Runs as a Windows desktop product, limiting platform options. Uses contact-sales pricing rather than published plan tiers. Its focus is process simulation, not chemical inventory or SDS management.	Focused on simulation, not chemical inventory or SDS management No built-in formulation management or regulatory compliance Documentation and community are the listed support channels
Our verdict	ProMax is process simulation software from Bryan Research & Engineering for engineers in oil and gas, refining, treating, and related process industries. It is particularly suited to gas-processing teams working on acid-gas removal and… Read the review →	DWSIM is a free, open-source chemical process simulator for engineers, educators, and researchers who need to model process flowsheets. It combines thermodynamic property packages with unit-operation simulation, and supports both… Read the review →

Strengths and trade-offs

• ProMax — where it wins

  • Models acid-gas removal with amine solvents and reaction kinetics.
  • Connects models to PI, OPC-HDA, ODBC databases, and Excel.
  • Combines optimization with pipeline, corrosion, and emissions tools.

  Where it doesn't

  • Runs as a Windows desktop product, limiting platform options.
  • Uses contact-sales pricing rather than published plan tiers.
  • Its focus is process simulation, not chemical inventory or SDS management.

• DWSIM — where it wins

  • Models flowsheets with thermodynamic packages and unit operations
  • Supports both steady-state and dynamic simulation
  • Runs on Windows, macOS, Linux, and Android

  Where it doesn't

  • Focused on simulation, not chemical inventory or SDS management
  • No built-in formulation management or regulatory compliance
  • Documentation and community are the listed support channels

• PProMax6.9/10 · Pricing on request

  A focused Windows simulator for gas treating, plant models, and process optimization.

  Visit ProMaxFull verdict →
• DWSIM6.9/10 · Free plan

  A flexible process simulator for teams that want desktop modeling without a license fee.

  Visit DWSIMFull verdict →