WITNESS Version 27.0 is now available. Learn more about how WITNESS 27.0 can underpin your digital transformation strategy by clicking here.
Consistently the most flexible, powerful, proven process simulation technology in the world, RHDHV‘s desktop modelling studio, WITNESS enables professional modellers to rapidly develop feature-rich models and simulation apps that provide unparalleled insight through dynamic data visualisation and freedom to test choices in a risk-free virtual environment.
RAPID MODEL DEVELOPMENT
COMPARE AND OPTIMISE BUSINESS CHOICES
RAPID MODEL DEVELOPMENT

Powerful Model Building Elements
Get your models up and running in no time with a wide range of standard modelling elements with unique logic controls and easy configuration.
Discrete Event and Continuous Modelling
Combine continuous flows with discrete events within models to address a wide range of business problems in the most efficient and appropriate way possible.


2D and 3D Modelling Environment
Design your model layout and develop logic efficiently in a 2D plan view before switching to stunning 3D visualisation at the touch of a button. WITNESS Quick3D™ is powered by Virtalis Visionary Render to deliver an exceptional immersive model experience and virtual reality performance.
Simple, Powerful Logic Coding
No need to delve deep into complex coding to define and structure your logic. WITNESS lets you develop your logic in compartmentalised modular blocks directly within building elements.


Embedded Business Intelligence
Get to the heart of model insights and communicate answers to stakeholder questions through inbuilt charts and reports that make WITNESS the ideal predictive analytics platform for business transformation.
Multi-core Processing
WITNESS offers support for multi-core processing of model execution allowing users to run parallel replications and experiments and deliver accurate results, insight clarity, and outcome certainty for stakeholders in a suitable timeframe.

Discover WITNESS
Watch our overview video and discover how you can use RHDHV‘s WITNESS to build feature-rich models and predictive digital twins, enabling you to test and validate your business decisions in a virtual, risk-free environment.
Easily switch between 2D and 3D views, to enable unparalleled insight into your business and its processes, in a visually rich and engaging environment.
In this video, you will be introduced to the technical capabilities within WITNESS, empowering you with the data to transform your business processes for the future.
System Requirements
WITNESS is supported on PC systems that meet the following minimum requirements:
- Processor: Intel® or AMD® – Processor Speed 2GHz (higher speeds recommended)
- Supported Windows Versions: Windows 10, Windows 8.1*, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2*
- Memory: 8GB of RAM (for experimentation 16GB recommended)
- Hard Drive: 500MB of available storage space (SSD recommended)
- Screen: 1920 x 1080 screen resolution
- Graphics: Graphics cards compatible with the supported Microsoft Windows Versions. WITNESS Quick3D requires an NVIDIA graphics card. Recommended adapters include NVIDIA GeForce© with at least 4GB of RAM or NVIDIA® Quadro® series.
- USB: WITNESS can be issued on a USB memory stick or downloaded from the RHDHV Support Portal. A USB socket is required for a hardware ‘dongle’ based security solution.
* For Windows 8.1 and Windows Server 2012 R2 the following additional prerequisites need to be installed – April 2014 Update (see KB2919355) and Servicing Stack Update (see KB2919442).
64 bit operating systems are supported
Note that WITNESS will not run on Windows XP.
Release Notes: | Version 27.0