About Imagine That Inc.

Imagine That Inc. (Imagine That!) provides a precise, proven toolset so you can build powerful simulation models. ExtendSim can minimize risk and help you realize your potential and your goals. 

Imagine That! simulation software and technologies have set the standard for simulation for more than two decades. Maintaining its goal to develop and support leading edge, low cost dynamic modeling tools which can be used in virtually any field, Imagine That Inc. has become a leader in the industry...backed by years of proven results by tens of thousands of ExtendSim users. 

The Birth of ExtendSim

Our commitment to innovation is as strong today as it was in the early days of the space race. At that time, ExtendSim architect Bob Diamond was attending the Polytechnic Institute of Brooklyn when the head of the Electronics Engineering department told him that a new department was being formed... a combination of mathematics, computers, physics and engineering. Being into math, and curious about the large IBM mainframe lurking down the hall, he immediately joined and became a constant presence in the computer center.

The bug bit hard, and he began to realize that he could use computers to duplicate the laboratory experiments in class so well, that he never really did the experiments, he just simulated them on the computer. Eventually, NASA approached him and asked if he could develop a simulation of their new liquid fuel booster for something called Project Apollo. He created the Rocket-Drop simulation, a monstrously large program that only had one function: follow the path of a single droplet of fuel, from the shower heads (as the fuel sprayers at the top of the engine were called) to the rocket engine exhaust, via subsonic, supersonic, and hypersonic flow. 

Then, it hit him that simulation was inaccessible except to the select few who had the resources to put together an entire system dedicated to one function. A generalized simulation application would be a great and useful thing, if one could find the computer that was both powerful enough and widespread enough to support it. This was 1965, and Seymour Cray was still building his superfast (at the time!) computers by hand and graphic user interfaces were still decades in the future. 

When he saw the graphical user interfaces (GUIs) on the Mac OS and Windows machines, he realized that he could use these tools to fulfill that long awaited dream. ExtendSim is built upon those roots. 

Imagine That Inc. is Launched

Imagine That Inc. was founded in 1987 to develop and market Extend and its successor ExtendSim, the first simulation applications allowing users of any discipline to use simulation and to develop their own libraries of customized simulation tools. 

Since its formation, Imagine That! has been dedicated to bringing the art, science, and fun of simulation to the desktop, in a form digestible and accessible by everyone. Extend was the first user-extendible simulation package meeting those expectations. 

ExtendSim Innovations

The Rocket-Drop Simulation was just the beginning. From the earliest days, Imagine That! embraced its role as industry visionary and leader, continuing to solve previously insurmountable problems. 

Extend was the first powerful, low cost, personal computer based simulation program developed specifically for a windowing environment.

Other trend-setting firsts followed, including: 

hierarchical modeling capability

open source code modeling components 

drag-and-drop user interface

library-based modeling

message-based architecture 

modules developed by third parties

the first package < $1,000

That vision continues today with trend-setting development in the areas of user interface design, simulation modeling flexibility, and ActiveX integration. Please see the complete History of ExtendSim for other firsts.

Customer Driven

Our customers span a range of industries and disciplines facing the challenge of adapting to new challenges by identifying solutions that will help lead to tomorrow's successes for their organizations. Around the world, the pace of technology adoption and change is phenomenal. At Imagine That!, we are committed to delivering the tools and technologies that simulationists need today, while providing next-generation solutions to respond to future opportunities.

Just look at who's using ExtendSim, where those companies are today, and where they'll be tomorrow. ExtendSim customers are acquiring a better understanding of the way things work, gaining the competitive edge, and improving their processes by quantum leaps. 

ExtendSim is in use by over 10,000 businesses, universities, and government organizations worldwide. Corporate and government organizations include: ICANN, SPICOSA, Procter & Gamble, Kaiser Permanente, Boeing, Baosteel, General Mills, the Federal Aviation Administration, Oak Ridge National Laboratory, and all branches of the US armed forces (Army, Navy, Air Force, Marines, and Coast Guard). Academic customers include: Stanford University, Harvard School of Business, Georgia Tech, University of Rochester Medical Center, and Purdue University. 

About Imagine That Inc.

Imagine That!, incorporated in 1987, develops, markets, and sells simulation software. The Company’s goal is to develop and support leading edge, low cost dynamic modeling tools which can be used in virtually any field.

Imagine That! strives for the utmost in excellence...and it is reflected in every aspect of our business. Imagine That, Inc. maintains a full-time development staff dedicated to improving and supporting ExtendSim. Numerous independent organizations are selling products based on the ExtendSim simulation engine. Additional organizations have developed internal-use products or have commercial products under development.

Imagine That, Inc. is a privately held company and is located in San Jose, CA.


HeadquartersImagine That Inc.
6830 Via Del Oro, Suite 230
San Jose, CA 95119 USA

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Call us1.408.365.0305

Office hours are 9 am to 5 pm (PST) Monday through Friday.