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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  • 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.

  • Modular Entities

    This video demonstrates the use of entities to: represent markets with sparse offerings and new product introductions, create new structure on the fly, from data or random events model multiple scenarios simultaneously for an aggregate infection model, model the same infection process on an agent based social network, and calibrate a function to time series

  • Causal Tracing®

    Like Vensim®, which created the tool, Ventity has Causal Tracing for rapid model analysis:  

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