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Privacy and Cookies

Data Security

Website Terms and Conditions

Software Licensing Terms

Privacy and Cookies

We may change this privacy notice from time to time by updating this page.

What information do we collect?

When you use this website, we may collect the following information:

  • the areas of the website that you visit
  • information about your computer, such as which browser you are using, your network location, the type of connection you are using (e.g. broadband, ADSL etc) and your IP address

We do this by using cookies, which are small files that help us track how our visitors use the website and enable us to understand where we can improve your experience. If you would like to find out which cookies we use and the information they track see our Cookies Policy.

Once you submit or register information through our website we will know who you are and your activities on this website and information about you and/or your company may be recorded on our systems. For example, we may ask for personal information when you download our software including:

  • your name
  • company name
  • email address
  • postal address
  • telephone number
  • country where you are based
  • Social media ID
  • your comments/questions
  • services/markets you are interested in

We may also collect personal information from telephone calls and/or other correspondence with you.

What do we do with the information we collect?

The information we capture is used for various purposes. The main purpose is to provide you with our services (whether available via the website or offline). We also use the information for:

  • website development
  • understanding how our visitors interact on the website
  • understanding what our clients are interested in
  • understanding what potential clients are interested in
  • dealing with enquiries/concerns
  • marketing our services and people to you
  • market research
  • service development
  • internal record keeping


We would like to provide you with information about our services and other information which we think you may find interesting. We may send you such information by post, email and/or telephone, unless you have asked us not to do so.

We will not provide your personal information to other organisations for marketing purposes without your explicit consent.

If at any time you do not want your information used for direct marketing purposes, please contact us or follow the unsubscribe link in our marketing email messages.

Who do we share this information with?

We may share your personal information with companies acting on our behalf who will only use the information to provide that service. However, we will retain control of your data and any third party service provider that we use must act in accordance with our instructions. We may also share your personal information with a purchaser or potential purchaser of our business.

In some circumstances, we may have to disclose your personal information by law, because a court or the police or other law enforcement agency has asked us for it.

How to get copies of or amend the information we have collected

You may request details of the personal information that we hold about you under data protection laws. If you would like a copy of the information held about you please write to us at oasys@arup.com or at: Data Protection Officer, 13 Fitzroy Street, London, UK, W1T 4BQ. Please note that we may charge a small £10 administration fee for information requests.

If you think any information we have about you is incorrect or incomplete, please email us as soon as possible. We will correct or update any information as soon as we can.

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Data Security

We are committed to ensuring that your information is secure. In order to prevent unauthorised access or disclosure we have put in place suitable physical, electronic and managerial procedures to safeguard and secure the information we collect, including locked cabinets, electronic password protection and pass card access to buildings.

If at any point you suspect or receive a suspicious communication from someone suggesting they work for Oasys or a website claiming to be affiliated with Oasys, please forward the communication to us or report the incident by email to oasys@arup.com or in writing to Oasys, 13 Fitzroy Street, London, UK, W1T 4BQ as soon as possible.

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Website Terms and Conditions

The contents of this web site are protected by copyright and other intellectual property rights under international conventions. No copying of any words, images, graphic representations or other information contained in this web site is permitted without the prior written permission of the webmaster for this site.

Oasys accepts no responsibility for the content of any external site that links to or from this site.

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Software Licensing Terms

Terms and Conditions of Purchase

The full conditions of purchase and maintenance for all Oasys software are set out in the Oasys Software Licence and Support Agreement. All prices are subject to TAX at the current rate.

Prices and specifications are subject to change without notice – please ask for a written quotation.

Although every care has been taken to ensure the accuracy of all information contained herein, the contents do not form or constitute a representation, warranty, or part of any contract.

Superseded Versions of Terms and Conditions

Oasys keeps copies of all superseded versions of its terms and conditions.

Maintenance & Support Services

Twelve months support and maintenance is included with most products. Thereafter maintenance is typically 20% of the current sales price.

An annual maintenance service is available for most programs after the first year.

This service includes:

  • telephone/fax/email/web based support
  • free software updates available via internet download
  • personalised output header for many products


Flow brings the power and speed of MassMotion to a wider market. Flow suits the needs of planners, designers, engineers and architects who need to quickly model environments to get feedback on pedestrian interaction and behaviour for a large number of different scenarios.
MassMotion Flow MassMotion
Unlimited crowd sizes

Capable of simulating hundreds of thousands of people within a matter of hours, enabling rapid design exploration

Powerful 3D editing and simulation environments

Easy-to-use polygon modelling tools

Multithreaded 64-bit crowd simulator

Take full advantage of multi-core processors and system memory

BIM compatibility (IFC2x3)

Automatically classify objects imported from IFC metadata

Direct support for SKP, DGN, and 2D CAD files

Import models from a wide range of products including AutoCAD, MicroStation, Sketch-Up, Rhino and Revit

Modelling tools to build 3D from 2D with ease

Combine 2D and 3D assets

Accurate evacuation and circulation behaviour

MassMotion is verified in accordance with the International Maritime Organisation (IMO) 1238 and the National Institute of Standards (NIST) Technical Note 1822

Flexible and powerful SQL driven analysis tools

High-performance database to store and retrieve simulation results, you can rapidly analyse designs

Real time view of 3D results

Develop custom insights based on spatial, temporal, operational, and personal characteristics of people and their environment

Time controlled gates and complex crowd scheduling

Standard scheduling of environmental events and variables

Image and movie export

Visually engaging 3D graphics, videos, charts and tabular data-driven outputs

Compatible files for the MassMotion Viewer

The Viewer is a free to download application to showcase your MassMotion simulations to stakeholders without MassMotion

Ticketing and process modelling

Assign specific properties to individual or groups of agents such as fast track tickets, or target end destinations

Advanced agent dynamics - Agents react to their environment

Each agent has their own agenda and will respond to changes in the environment in real time based on academic research and social modelling

Advanced agent properties - Logical control of agent behaviour

Define triggers such as crowd density, time of day, lack of seating or a complex combination of conditions

Spreadsheet based scheduling

Create complex timetables such as arrivals, boarding and departures using a simple Microsoft Excel import

MassMotion SDK

Offers complete control over the advanced algorithms used

Crowd Simulation Software

MassMotion Flow 9.5 Released – 10th May 2018

Version 9.5 introduces usability advancements, including to BIM functionality and visualisations, bookmarking, and customised journey scheduling. 9.5 also includes a new tool for sharing simulation results to stakeholders and clients worry-free. Read more about the new features.


Flow is the perfect tool for identifying crowd flow rates, identifying design inefficiencies or testing evacuation procedures. Simple to use, Flow can simulate an almost unlimited number of agents within any environment. Test ingress and egress at peak times, during planned events or predict future crowd movement by simulating an increased number of pedestrians within a design to identify potential issues with expected growth.

Flow will suit the needs of planners, designers, engineers and architects who need to quickly model environments to get feedback on pedestrian interaction and behaviour for a large number of different scenarios.

Download our brochure

How Flow Works

BIM is very much at the heart of the design of Flow and users can rapidly transfer BIM models to MassMotion using the open IFC 2×3 standard. Integrating MassMotion with a BIM based workflow means that the data generated can be used to inform others in the project teams quickly, producing optimal designs. Flow also features a rich set of 3D modelling tools for rapid testing of alternatives and can even be used to develop 3D environments from scratch.

Years of academic studies and complex algorithms are used to make Flow as accurate to real life as possible. There is a clear distinction between MassMotion and Flow based on the range of the needs of our customers and all parties interested in our pedestrian simulation solution.


Key Benefits

  1. Develop pedestrian environments using either imported CAD/BIM geometry or from scratch with Flow's polygon modelling tools.
  2. Exploring different scenarios is no longer an expensive or time-consuming luxury. Simulate, modify and analyse faster than ever.
  3. Combine 3D and 2D assets – Import your 2D CAD files and then develop them into 3D models to observe and analyse your design more effectively.

Please fill out the following form to make an enquiry for this software.

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Requesting a trial and placing an enquiry

The trials are limited for 14 days only, there is no functional limitation. During the evaluation period you will only be able to use the software for test purposes and not for commercial paid work, and for the duration we will support you to get the most out of your test. MassMotion and MassMotion Flow system requirements can be found in the FAQ.

All we ask from you is some details so we can contact you to issue you with the installation file.

If you’re interested in our software, have some questions or want to know the pricing, we’re here to help. Contact us and one of our advisors will help you find the answers you need.

Simply fill out the contact form with your question and we’ll get back to you as soon as we can.


USD $1,012.50USD $10,125.00

Flow brings the power and speed of MassMotion to a wider market. Flow suits the needs of planners, designers, engineers and architects who need to quickly model environments to get feedback on pedestrian interaction and behaviour for a large number of different scenarios.

Total: USD $0.00


Crowd simultaion software

Additional information

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"We have found it to be intuitive and flexible. The thing that particularly impressed us was the simulation speed. We were able to run a large number of models much more quickly than we have been able to do with other packages."

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