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.

  • 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

  • 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

News

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

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  • Community Coronavirus Model

    This video explores a simple epidemic model, parameterized for a community confronting coronavirus. The video is in Vensim, but we’ve now translated the model to Ventity: Community corona 8.zip There’s another copy at metasd.com, where you can share comments. Also, check back here for updates to the model and a companion video, to be released

  • Ventity 3.0.2 Released

    This is a minor maintenance release. Adds string functions for attribute initialization. Fixes license grace period. Improves consistency of computation when actions are triggered by random events at start of period. Reduces flicker in GIS visualization rendering. Provides control-drag for drawing initial arrows between stocks. Improves lat-lon defaults for GIS visualization with fixed coordinates. Improves

  • Ventity 3.0.1 Released

    This is a minor maintenance release, but it brings substantial improvements to the beta GIS visualizer. See the Help System for details.