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Download Vensim® Software

Current Version: 5.7a
Download Licensed Software and Updates 
If you have already purchased Vensim, you can download from here. You will need your registration number and will automatically be offered the most current software you qualify for.  You will be told if you need to upgrade or extend your maintenance to receive the newest version.
Free Downloads
Vensim Demonstration, Vensim PLE (Evaluation or Educational), Vensim Model Reader, Molecules
Purchase Upgrades (Secure Server)
If you want to upgrade to the latest Vensim release, and you bought Vensim directly from us, you can do so from here.  If you bought Vensim through an international distributor you will need to contact them for upgrades. 
New Online Purchase (Secure Server)
Vensim PLE (commercial), Vensim PLE Plus and Vensim Application Runtime are available for online purchase
Documentation
Installation instructions,  User's Guide, Molecules guide

All Vensim configurations are available by download and can be upgraded online.  New purchases of Vensim Professional and DSS are available by contacting Ventana Systems, using the Order Form, or from our International distributors.  Pricing for VensimInstallation instructions.

Notes

bullet All Download Free products are free for personal or educational or academic use.
bullet Vensim PLE is a shareware product when used for commercial or governmental work and is priced at US $75.00 with manuals and disks, or US $50 without.
bulletThe Vensim Demonstration Program may be used for evaluation purposes only, and may not be used for any commercial activity.
bullet The Vensim Model Reader may be distributed for free with your models (including commercial use).