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ExtendSim
ANDRITZ Inc. is listed at 13560 Morris Road, Suite 1250, Alpharetta, GA 30004 USA.
What it is
ExtendSim simulates processes so decision-makers can assess improvement opportunities and explore system configurations. Its modeling tools support customizable logic, hierarchical subsystems, interactive interfaces, and comparisons of design options. Features include reusable custom blocks, animation, 35 built-in distributions, and statistical analysis. Data exchange options include Excel, ODBC and ADO databases, FTP, and text files; Scenario Manager can export results to JMP or Minitab. ExtendSim Pro adds discrete-rate and reliability block diagramming to DE, while DE adds message-based discrete-event architecture to CP. ExtendSim is a Windows application, and standard licenses require 64-bit Windows 10 or Windows 11; ARM configurations are not officially supported. Mac use requires 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 cannot run on virtual machines. Individual licenses are one-time purchases with the first year of Maintenance & Support included: CP costs $995, paid once, DE $3,495, paid once, and Pro $4,995, paid once.
For and against
For
- Supports customizable logic and hierarchical subsystems.
- Includes animation, 35 distributions, and statistical analysis.
- Exchanges data with databases, Excel, FTP, and text files.
- Offers a 30-day trial.
- First license year includes Maintenance & Support.
Against
- Standard licenses require 64-bit Windows 10 or 11.
- ARM configurations are not officially supported.
- Trial mode disables Multicore Analysis and adds a watermark.
- Trial mode cannot run on virtual machines.
The verdict
ExtendSim offers process modeling and data exchange tools, with capabilities varying by module. Check the Windows requirements, trial restrictions, and individual-license limits against your intended setup.
Who it suits
It suits decision-makers and modelers who need to simulate processes and examine system configurations. Its individual licenses are for one identified user on one computer, not shared or network use.
Plans and prices
Analysis RunTime (Individual)
runs models built in ExtendSim Pro, DE or CP
Read 15 Oct 2026 · extendsim.com
ExtendSim CP (Individual)
continuous-process modeling · internal relational database · optimizer · scenario manager
Read 15 Oct 2026 · extendsim.com
ExtendSim DE (Individual)
CP features · message-based discrete-event simulation · advanced resource management
Read 15 Oct 2026 · extendsim.com
ExtendSim Pro (Individual)
DE features · discrete-rate simulation · reliability block diagramming · advanced simulation technologies
Read 15 Oct 2026 · extendsim.com
ExtendSim Cloud (up to 4 instances)
up to 4 concurrent instances · customer-built front end required
Read 15 Oct 2026 · extendsim.com
ExtendSim Cloud (up to 32 instances)
up to 32 concurrent instances · customer-built front end required
Read 15 Oct 2026 · extendsim.com
OEM license
embed the ExtendSim simulation engine in your application
Read 15 Oct 2026 · extendsim.com
ExtendSim Cloud Subscription (up to 4 instances)
Up to 4 instances · renewal $10,000/year
Read 8 Oct 2026 · extendsim.com
ExtendSim Cloud Subscription (up to 32 instances)
Up to 32 instances · renewal $25,000/year
Read 8 Oct 2026 · extendsim.com
On the record
- API and SDK
- ExtendSim exposes a rich API with thousands of built-in functions and an integrated development environment for compiled blocks.extendsim.com · read 15 Oct 2026
- Cloud API
- ExtendSim Cloud provides an HTTP API for spawning instances, loading models, configuring and running scenarios, and returning JSON results.extendsim.com · read 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.extendsim.com · read 15 Oct 2026
- Cloud limits
- ExtendSim Cloud does not support model building and allows models to be configured and run.extendsim.com · read 8 Oct 2026
- Cloud security
- Cloud client access uses authenticated user groups and JWT tokens, with a license manager controlling concurrent instances.extendsim.com · read 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.extendsim.com · read 15 Oct 2026
- Company founding
- LinkedIn lists ExtendSim as founded in 1987 and headquartered in Alpharetta, Georgia.linkedin.com · read 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.extendsim.com · read 8 Oct 2026
- Company size
- LinkedIn lists ExtendSim as a software-development company with 2–10 employees.linkedin.com · read 15 Oct 2026
- Current release
- The official legacy page identifies ExtendSim 2026 as the current release and ExtendSim 2024 as a legacy version.extendsim.com · read 15 Oct 2026
- Custom blocks
- An integrated authoring environment lets users create reusable blocks, components, custom dialogs and icons, then save them in libraries.extendsim.com · read 15 Oct 2026
- Data management
- The software provides an internal relational database with linked tables and multiple data import and export methods.extendsim.com · read 15 Oct 2026
- Documentation
- Documentation includes product-specific Quick Start Guides, User and Technical References, block help, tool tips, FAQs, videos and sample models.extendsim.com · read 15 Oct 2026
- External analysis
- Scenario Manager can export analysis to JMP and Minitab, and model data can be exchanged dynamically with Excel.extendsim.com · read 15 Oct 2026
- Features
- The feature page lists reusable custom blocks, model hierarchies, simulation animation, 35 built-in distributions, and statistical analysis tools.extendsim.com · read 8 Oct 2026
- Graphical modeling
- Users build models by connecting graphical blocks, with on-screen results, reports and integrated animation.extendsim.com · read 15 Oct 2026
- Hierarchy
- Models can contain unlimited hierarchical layers and reusable submodels saved as hierarchical blocks.extendsim.com · read 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.gitnux.org · read 15 Oct 2026
