BIOVIA COSMOtherm (COSMO-RS) vs DWSIM

BIOVIA COSMOtherm (COSMO-RS)8.2Visit DWSIM6.9Visit

Higher score BIOVIA COSMOtherm (COSMO-RS) #2 in Chemical Software 8.2/10 Pricing on request ✓ 0 of 5 features Visit BIOVIA

vs

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

• BIOVIA COSMOtherm (COSMO-RS) fits best

  Researchers predicting mixture thermodynamics

• DWSIM fits best

  Teams wanting free, flexible process simulation

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Side by side

Feature	BIOVIA COSMOtherm (COSMO-RS) 8.2/10 Visit ↗	DWSIM 6.9/10 Visit ↗
At a glance
Editor score	8.2	6.9
Ranking	#2 in Chemical Software	#7 in Chemical Software
Best for	Researchers predicting mixture thermodynamics	Teams wanting free, flexible process simulation
Pricing model	Paid	Free
Starting price	Not published	Not published
Free plan	—	✓ (best)
Free trial	—	—
Deployment	Desktop	Desktop, Mobile
Platforms	Windows	Windows, macOS, Linux, Android
Support	Community, Docs	Docs, Community
Built for	Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features BIOVIA COSMOtherm (COSMO-RS) 0/5 · DWSIM 1/5
SDS management	—	—
Chemical inventory	—	—
Formulation management	—	—
Regulatory compliance	—	—
Mobile access	—	✓ (best)
Specs
Deployment	On-premises	On-premises
Our review
Pros	Predicts solubility across liquids, solids and gases Covers phase equilibria, partitioning, vapor pressure and pKa Offers graphical workflows and command-line batch processing	Models flowsheets with thermodynamic packages and unit operations Supports both steady-state and dynamic simulation Runs on Windows, macOS, Linux, and Android
Cons	Windows desktop deployment limits platform flexibility Contact-sales pricing makes cost assessment less direct Specialized thermodynamics scope is narrower than process simulation	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	BIOVIA COSMOtherm applies COSMO-RS to predict thermodynamic properties of molecules in pure and mixed liquids. Its intended audience includes researchers and teams in chemistry, chemical engineering, formulation, drug development,… 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

• BIOVIA COSMOtherm (COSMO-RS) — where it wins

  • Predicts solubility across liquids, solids and gases
  • Covers phase equilibria, partitioning, vapor pressure and pKa
  • Offers graphical workflows and command-line batch processing

  Where it doesn't

  • Windows desktop deployment limits platform flexibility
  • Contact-sales pricing makes cost assessment less direct
  • Specialized thermodynamics scope is narrower than process simulation

• 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

• BIOVIA COSMOtherm (COSMO-RS)8.2/10 · Pricing on request

  A specialized COSMO-RS tool for predicting molecular properties in pure and mixed liquids.

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

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

  Visit DWSIMFull verdict →