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Stella® Online

Powerful modeling and diagramming capabilities on any web browser

Create engaging models online

Using the web-based modeling tool on the isee Exchange, easily create powerful simulation models just as you would in Stella Professional. Share them with the world or just your preferred colleagues with the click of a button. A complementary web-based causal loop diagram (CLD) editor makes building and sharing CLDs simple, supporting qualitative Systems Thinking.

Stella Online works on any modern web browser - on desktops, laptops, tablets, smartphones, and Chromebooks

Stella Online

Feature Comparison

Stella Online: Free

Limited Online Modeling Experience

2 Stocks
13 Entities (including stocks)
1 Graph
2 Comparative Runs
3 Graph Variables
Numeric Displays

* Web-based applications have hardware limitations which will affect the total number of entities you can use


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Stella Professional Online
See Pricing Options

Unlimited Online Modeling Experience

Unlimited Stocks
Unlimited Entities
Unlimited Modules
Unlimited Graph
Unlimited Comparative Runs
Unlimited Graph Variables
Unlimited Numeric Displays

* Web-based applications have hardware limitations which will affect the total number of entities you can use

** Included with purchase of Stella Architect

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Key Features

Stella Live

Dynamically explore model behavior with instant updating

Identify Errors

Quickly find errors in equations and units

Bezier Connectors

Go around objects and lines, not through them


Many mathematical, statistical and logical operations

Stella Online: Free

Limited Online Modeling Experience

Ideal for testing simple model structures and for beginning to model, the free version of Stella Online allows unlimited models with no more than two stocks.

Stella Professional Online

Unlimited Online Modeling Experience

Stella Professional Online is your complete web-based modeling tool for dynamic modeling, policy analysis, and strategy development. Access the rich feature set of Stella Professional anywhere, at any time, on any device that has a modern browser. Upload your models to share and collaborate with others, or build them from scratch anywhere you have an Internet connection. Stella Professional Online is great for schools, institutions with software installation restrictions, and people who are always on the go.

Already own Stella Professional or Stella Architect? Access to Stella Professional Online is included with your maintenance and support contract. Otherwise, we offer 1-month, 3-month, 6-month, and 12-month subscriptions at various price points and with volume discounts. Choose Pricing Options to see the pricing or contact us for volume or longer-term discounts.

**This is not included with student licenses

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Phone: (603) 448-4990 Email:

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Wheelock Office Park | 31 Old Etna Rd, Suite 7N | Lebanon, NH 03766 | US

isee systems inc. holds trademarks registered in the U.S. Patent and Trademark Office for iThink®, Stella®, isee systems® and claims the following trademarks; isee NetSim™, isee Exchange™, Stella Live™, Causal Lens™, Stella Online™ and Stella Professional Online™.

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