COCO Simulator
COCO Simulator: A free Windows simulator for steady-state flowsheets, thermodynamics, unit operations and reaction numerics. Ranked #9 of 15 in Chemical Software by our editors (6.6/10); pricing: Free plan; best for budget-conscious Windows process simulators.
At a glance
- Editor score6.6 / 10
- PricingFree plan
- Best forBudget-conscious Windows process simulators
- Free planYes
- Paid fromNone
- SDS managementNo
- Facts checked24 Sep 2026
Where it wins
- Free of charge, with voluntary donations rather than a paid plan
- Combines thermodynamic packages, compound data and reaction numerics
- Supports third-party CAPE-OPEN components in flowsheets
Where it doesn't
- Windows desktop software, with no mobile access
- Focused on process simulation, not chemical inventory or SDS management
- Community support may not suit teams needing other support channels
Our verdict on COCO Simulator
COCO Simulator is a Windows-based environment for steady-state chemical process simulation. Its COFE graphical flowsheeting environment works with TEA thermodynamic property calculations, COUSCOUS unit operations and CORN reaction numerics. Engineers can assemble flowsheets from thermodynamic systems, process units and reaction packages, including compatible third-party CAPE-OPEN components. The vendor describes it as suitable for engineering case studies and CAPE-OPEN development and testing, making it a fit for solo engineers and smaller teams looking for a desktop process simulator without a software charge.
Its scope spans several core simulation tasks: TEA supports loading and editing pure-compound data, COUSCOUS includes reactors, compressors, heat exchangers and separators, and CORN handles chemical reaction numerics. A flowsheet can also include compatible third-party CAPE-OPEN components, while an online update utility is included. That combination is useful where a project needs steady-state flowsheeting and thermodynamic calculations in one environment. COCO is not designed for adjacent chemical operations such as SDS management, inventory, formulation or regulatory compliance, so teams seeking those functions should look elsewhere.
COCO is offered free of charge, and the vendor mentions voluntary donations rather than a paid plan or paid tiers. Deployment is desktop and Windows-only, with community support. This makes the product a practical candidate for budget-conscious users whose work fits its steady-state simulation focus and platform. It is a weaker fit for teams that require mobile access, a different desktop platform, broader chemical management functions or support beyond community channels. Consider it for process simulation, not as a general chemical operations system.
COCO Simulator pricing
COCO Simulator fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| SDS management | No |
| Chemical inventory | No |
| Formulation management | No |
| Regulatory compliance | No |
| Deployment | On-premises |
| Mobile access | No |
| Deployment | Desktop |
| Platforms | Windows |
| Support | Community |
| Built for | Solo, Small business, Mid-market (editorial estimate) |
| Pricing | Free plan |
| Website | cocosimulator.org |
| Facts checked | 24 Sep 2026 |
Alternatives to COCO Simulator
- AVEVA PRO/II SimulationA detailed process simulator for engineers modeling steady-state plant operations.9.0
- BIOVIA COSMOtherm (COSMO-RS)A specialized COSMO-RS tool for predicting molecular properties in pure and mixed liquids.8.2
- IUCLIDFree dossier software for chemical-substance data and regulatory preparation.7.7
See all COCO Simulator alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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