Licensing - How we license | VSN International


We are currently moving our software products to a new licensing platform. This section of the website tells you everything you need to know about how we license, and what the changes we are making mean for our customers.

How We License




Like many software companies, VSNi uses licensing to provide customers with access to its software products. Customers pay in advance for a license which allows an agreed number of concurrent ‘use instances’ for the software for a set time, normally 12 months. If the license is renewed and paid for before expiry it will simply roll on for a further 12 months. If payment isn’t received before expiry, access stops until the license is renewed.

To provide additional flexibility to our licensing options we have been moving ASReml-SA, ASReml-R and CycDesigN to a new licensing service, Reprise License Manager (RLM). In July 2021, with the move of ASReml-SA to the RLM service we completed that process. Only Genstat continues to utilise our original Flexnet licensing service, and we plan to move Genstat to RLM for future releases. 

There are a few differences in the way each licensing service provides customers with access to our software. This section of the website is here to help you understand how each licensing service works so you can be sure each product will work for you. Of course, we can always be contacted at if you need further help or guidance. 


Genstat licenses are node-locked, which means that the software can only be used on the computer on which the license is installed. Where customers want more than one user to have access to Genstat, they need to purchase and install multiple licenses. 

The Genstat concurrent option (sometimes called floating or networked) enables customers to offer access to a wider community of users on a first come, first served basis. This requires you to install our license management software on a nominated license server in order to run Genstat. The license server must be a reliable computer that is always running during normal operating hours as licensed applications will not work elsewhere on the network if the server is not available. Universities often choose this option, purchasing what we call a Genstat campus license. This same type of licensing arrangement is offered to larger companies and is known as an enterprise license.

ASReml-SA, ASReml-R and CycDesigN

ASReml-SA (4.1 & 4.2), ASReml-R (4) and CycDesigN (6 & 7) now use the RLM license service. Earlier versions will still be operating on the Flex licensing service as Genstat still does (described above).

RLM licensing allows for multiple users to concurrently access software under a single agreement based on the number of users licensed to use the software. So, a license may grant one user access, or multiple users (an enterprise license for example). Additionally, users may access the software from different client machines such as PCs, laptops, shared servers etc., which makes utilising the software much more flexible. As the RLM license service is cloud-based you’ll need internet access to allow your license to be validated each time you wish to access the software (note that it is possible to go offline for up to 30 days from a physical machine once you have opened a session and validated your license).

Larger organisations may have very specific requirements and require a more bespoke solution. For some complex installations, we can offer enterprise ‘on-premises’ licensing. This allows organisations to host their own licensing server and avoid the requirement for internet access. Being a bespoke solution, this option is charged at a premium and is only available for larger organisations – contact us at for further details.

Key Dates

  • From 1st July 2021 all new ASReml-SA, ASReml-R and CycDesigN sales are licensed via the RLM service
  • From 1st January 2022 all ASReml-SA, ASReml-R and CycDesign license renewals will be licensed via the RLM service

Contact us

Please use this form if you require further information. We will get back to you as quickly as we can, usually within 48 hours.