Ventity 2.0 Full Release
Following up on the Ventity 2.0 Beta, the full commercial release of Ventity 2.0 is now available.
Ventity 2.0 beta Release
Ventity 2.0 beta, our most ambitious update yet, is here! We’ve added several new key features (and a few improvements to existing ones) that we’d like to take a moment to highlight. First up, to help with model creation and clarity we’ve added the dynamic functions Smooth, Trend, Forecast and Delay which can be accessed […]
Ventity Release 1.3
Ventity release 1.3 has arrived! Much of what’s new is under the hood, including big performance improvements and infrastructure to support deployment as a web service, with Forio support coming soon. There’s also a new architecture for lookup tables, with functions for extrapolation and finding the min, max, slope, and area under curves. The builtin […]
Ventity Release 1.2
Ventity version 1.2 has arrived! A big new addition to the Chart Manager allows for editing of global settings to allow you to better customize and save the kinds of charts you want displayed. We’ve also modified the charts themselves to be much more responsive, and have improved the Entity Picker‘s tracking, and have been […]
Ventity Release 1.1
Ventity version 1.1 has launched! We’ve got several new features in addition to those highlighted in the pre-release news post. In addition to the Chart Manager, which helps with storing, sorting and customizing your charts, Causal Tracing, useful for fast and effective analysis of model dynamics, and the GetCategory and DelayInformation functions, we’ve also redone […]
Ventity Pre-Release 1.1
The Ventity pre-release for version 1.1 is here! We’ve added several new features that we’d like to highlight along with a host of other improvements. First up, the Chart Manager is a new tool which will be automatically opened whenever you plot a variable in Ventity. Each Chart can be saved or altered individually, with […]
Vensim 7 Release
Vensim 7 is available for download or purchase in the Vensim store. This includes several significant new features, including: – Interactive sensitivity runs in Synthesim – Percentile export for sensitivity runs– Calibration payoffs can now compare model variables to one another as well as to data (great for synthetic data experiments)– A trigger for data […]
Ventity Release 1.0.2
Ventity is just getting better – release 1.0.2 is now available for evaluation and purchase. Download a copy now. Entity Picker Improvements The revised Entity Picker is much faster than the initial version, which makes it easier to analyze large populations of entities. You can easily pick out individuals, or slice collections by attributes, to […]
Ventity Release 1.0.1
We’ve released a minor update to Ventity that resolves a “bootstrap” error on start up, experienced by a few users. If you already have release 1.0 running, there’s nothing to do – this is otherwise identical. If you’re just getting started, download Ventity with an evaluation license here. If you already have a license, get […]
Ventity 1.0 Released

Ventity is now officially available! Learn more about it. Download an evaluation copy. Purchase a license (or claim a free one). Release 1.0 includes enhanced Causal Tracing™, with interactive trees and strip graphs:
Ventity Beta E48, October 6, 2016

The latest beta is #E48, October 6th. Get it here. There are several improvements over the September release, but one that’s particularly helpful is color-coordination of entity traces across multiple charts: We’re preparing for commercial release, so this version is testing licensing infrastructure. For the moment, this could hardly be easier – just click the […]
Ventity Beta update E30, September 27, 2016
The latest beta is #E30, September 27th. Get it here. There are many refinements in this version, and stability is very good. There are too many items to list, but here are a few representative improvements: Causal tracing tables simplify debugging Copy-paste stability much improved Multi-sliders for Synthesim-like control Optimization with vector inputs and outputs […]
Vensim 6.4 Released.
Get It Vensim 6.4 is available for download or purchase in the Vensim Store. Upgrades are easy – just visit the download page and enter your license key information. PLE is always free for noncommercial use, and the Model Reader is free for redistribution of any model. What’s New? Optimization improvements Sensitivity simulation improvements
Ventity Beta Available
The public beta of Ventity, new simulation software, is now available – we’ve just uploaded the latest (build 573). Get it at https://www.ventity.biz Ventity is new simulation software for complex systems. Key benefits include: Modularity and object orientation, supporting sectors and complex agents, without arcane arrays Dynamic creation and deletion of model components and relationships […]
Vensim 6.3D Released
Get It Vensim 6.3D is available for download or purchase in the Vensim Store . Upgrades are easy – just visit the download page and enter your license key information. PLE is always free for non-commercial use, and the Model Reader is free for redistribution of any model. What’s New? This is primarily a maintenance […]
Vensim’s new partner – Ventity
Ventity has launched! Find our more.
Vensim 6.3 Released
Vensim 6.3 is available for download or purchase in the Vensim Store. 6.3 emphasizes engine improvements that keep Vensim #1 when it comes to industrial strength simulation. There are also some usability upgrades, like better number formatting and placement of the workbench variable in the bottom status toolbar.
2013 ISDC User’s Group Presentation
We’re pleased to share our presentation from the Vensim User’s Group meeting at the 2013 International System Dynamics Conference in Cambridge. The highlight of most immediate interest is the imminent release of Vensim 6.4, which runs in 64 bit mode, permitting models to address much more memory. An alpha version is already running on our computers.
Vensim 6.0b Released
Release Version 6.0b includes new CSV data I/O functionality and several bug fixes.
Vensim 6.0a released
Release Version 6.0a includes fixes for several minor problems introduced with new features in Version 6.0. These include: See the full release notes.
Vensim 6 Optimization Features
A quick tour of new optimization & calibration features in Vensim 6: