Ventity is software for modeling dynamic systems. It combines a friendly, pretty interface with the power of modular entities, data-friendly architecture and dynamic model structure changes.

Featured

Some features & applications of Ventity:

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  • Entity Selection by Attribute

    Need to see all the model year cohorts of diesel vehicles in your fleet? No problem. Ventity’s Entity Picker lets you select entities for viewing by model run, unique ID, or any entity attribute. Similarly, you can create collections of entities by attribute, and use those to compute aggregates – sum, average, maximum – for

  • Autocomplete

    The Ventity equation editor, and other forms, are non-modal and use predictive typing. That makes it easy to navigate, view diagrams, and enter just what you need, without a complex dialog. Because a model has a limited set of terms, predictions are good, and model-diagram and units consistency checks further help to prevent errors.

  • Dynamic Structure

    In Ventity, you can introduce new entities on the fly during a simulation. You can introduce them via data, or programatically with discrete Actions. Introduce a firm into a market when you need it, or delete a cohort of products when they’re all sold. Simulate and review just your real behavior, without lots of clutter

News

We invite you to read about recent releases and other news:

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  • Ventity 5.1 Release

    Ventity 5.1 adds new features including Run Lists, Style Overrides, and options to hide run-time warnings.  This version also supports the use of entities created during the simulation by sensitivity and optimization parameters.  See the help for more details.

  • What’s New @ ISDC 2024

    Video from the Ventana Systems vendor demo/user group session at the 2024 System Dynamics conference in Bergen. See also: the new workshop video.  

  • Introduction to Ventity – Projects & Reuse

    Our workshop from ISDC 2024 in Bergen is recorded below. This introduces modeling in Ventity, using a simple project model. It features the basic operations needed to build and run a model, as well as highlighting references and attributes, and reuse of structure an data. A .zip archive containing materials is available here: Ventity Intro