ExtendSim
ExtendSim is process simulation software for decision-makers assessing improvement opportunities and possible system configurations.
What ExtendSim is
ExtendSim is process simulation software for decision-makers assessing improvement opportunities and possible system configurations. It supports customizable modeling logic, hierarchical subsystems, interactive interfaces, and exploration of design options. Its feature set includes reusable custom blocks, model hierarchies, animation, 35 built-in distributions, and statistical analysis tools. Data exchange options include Excel, ODBC and ADO databases, FTP, and text files; Scenario Manager can export results to JMP or Minitab. ExtendSim is a Windows application, and standard licenses require 64-bit Windows 10 or Windows 11; ARM configurations are not officially supported. Mac users can run it only by installing Windows through an emulator such as Parallels or Boot Camp. The 30-day trial begins at first launch and is limited to the downloader. Trial mode disables Multicore Analysis, places a watermark on models, and does not run on virtual machines. Individual licenses are one-time purchases: CP costs $995, paid once, DE $3,495, paid once, and Pro $4,995, paid once, each including the first year of Maintenance & Support.
Good
- Offers customizable modeling logic and hierarchical subsystems.
- Includes 35 built-in distributions and statistical analysis tools.
- Exchanges data with Excel, databases, FTP, and text files.
- 30-day trial is available.
Watch out
- No free plan is listed.
- Standard licenses require 64-bit Windows 10 or 11.
- Trial disables Multicore Analysis and adds a watermark.
Who it suits
ExtendSim suits decision-makers modeling processes and comparing system configurations. It is intended for users with a supported Windows setup or the ability to run Windows on a Mac.
Verdict
ExtendSim provides process modeling, simulation, and data exchange tools for examining operational scenarios. Check the platform requirements and trial restrictions before choosing a license.
Plans and prices
From ExtendSim's own pricing page, checked 15 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Analysis RunTime (Individual) | $495, paid once | runs models built in ExtendSim Pro, DE or CP · one-time license; first-year MSP included |
| ExtendSim CP (Individual) | $995, paid once | continuous-process modeling · internal relational database · optimizer · scenario manager · multicore analysis · one-time license; first-year MSP included |
| ExtendSim DE (Individual) | $3,495, paid once | CP features · message-based discrete-event simulation · advanced resource management · one-time license; first-year MSP included |
| ExtendSim Pro (Individual) | $4,995, paid once | DE features · discrete-rate simulation · reliability block diagramming · advanced simulation technologies · one-time license; first-year MSP included |
| ExtendSim Cloud (up to 4 instances) | $10,000 a year | up to 4 concurrent instances · customer-built front end required · annual subscription |
| ExtendSim Cloud Subscription (up to 4 instances) | Priced on request | Up to 4 instances · renewal $10,000/year |
| ExtendSim Cloud (up to 32 instances) | $25,000 a year | up to 32 concurrent instances · customer-built front end required · annual subscription |
| ExtendSim Cloud Subscription (up to 32 instances) | Priced on request | Up to 32 instances · renewal $25,000/year |
| OEM license | $50,000 a year | embed the ExtendSim simulation engine in your application · starts at $50,000/year |
The facts
Each one read from ExtendSim's own pages, with the date it was checked.
What it does
- API and SDK
- ExtendSim exposes a rich API with thousands of built-in functions and an integrated development environment for compiled blocks.checked 15 Oct 2026
- Cloud API
- ExtendSim Cloud provides an HTTP API for spawning instances, loading models, configuring and running scenarios, and returning JSON results.checked 15 Oct 2026
- Cloud limitation
- Cloud users cannot build models or blocks or change model structure, and the licensee must develop the front-end interface.checked 15 Oct 2026
- Cloud limits
- ExtendSim Cloud does not support model building and allows models to be configured and run.checked 8 Oct 2026
- Cloud security
- Cloud client access uses authenticated user groups and JWT tokens, with a license manager controlling concurrent instances.checked 15 Oct 2026
- Cloud technology
- The Cloud services manager is built with Node.js, stores client information in MongoDB and supports Python, JavaScript or C# front ends.checked 15 Oct 2026
- Current release
- The official legacy page identifies ExtendSim 2026 as the current release and ExtendSim 2024 as a legacy version.checked 15 Oct 2026
- Custom blocks
- An integrated authoring environment lets users create reusable blocks, components, custom dialogs and icons, then save them in libraries.checked 15 Oct 2026
- Data management
- The software provides an internal relational database with linked tables and multiple data import and export methods.checked 15 Oct 2026
- Documentation
- Documentation includes product-specific Quick Start Guides, User and Technical References, block help, tool tips, FAQs, videos and sample models.checked 15 Oct 2026
- External analysis
- Scenario Manager can export analysis to JMP and Minitab, and model data can be exchanged dynamically with Excel.checked 15 Oct 2026
- Features
- The feature page lists reusable custom blocks, model hierarchies, simulation animation, 35 built-in distributions, and statistical analysis tools.checked 8 Oct 2026
- Graphical modeling
- Users build models by connecting graphical blocks, with on-screen results, reports and integrated animation.checked 15 Oct 2026
- Hierarchy
- Models can contain unlimited hierarchical layers and reusable submodels saved as hierarchical blocks.checked 15 Oct 2026
- Independent comparison
- Gitnux characterizes ExtendSim as suited to throughput, queueing and operational-policy questions, with limits in continuous-physics depth and large-model authoring speed.checked 15 Oct 2026
- Installer security
- The official installer is digitally signed and verified by ANDRITZ, although Windows SmartScreen may warn on newly released installers.checked 15 Oct 2026
- Integrations
- Official connectivity includes Excel, Microsoft Access, Oracle, MySQL, SQL Server, XML and FTP through ODBC or ADO interfaces.checked 15 Oct 2026
- Interactive runs
- Model parameters and logic can be changed while a simulation is running, without a code-generation phase.checked 15 Oct 2026
- License limits
- An Individual license is for one identified user on one computer, and shared use or network or internet use is prohibited under that license option.checked 8 Oct 2026
The company
- Company founding
- LinkedIn lists ExtendSim as founded in 1987 and headquartered in Alpharetta, Georgia.checked 15 Oct 2026
- Company history
- Imagine That Inc. was founded in 1987 to develop Extend and ExtendSim, and ANDRITZ Inc. acquired the ExtendSim family in 2024.checked 8 Oct 2026
- Company size
- LinkedIn lists ExtendSim as a software-development company with 2–10 employees.checked 15 Oct 2026
- Founded
- 1987checked 28 Sep 2026
- Headquarters
- ANDRITZ Inc. is listed at 13560 Morris Road, Suite 1250, Alpharetta, GA 30004 USA.checked 8 Oct 2026
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