License options

The products of callas software are available for different use cases:

  • From individual, interactive file handling to high volume, fully automated, and scalable environments.
  • You can use your license for production or development purposes.
  • Maybe you process files for in-house use or as a payable service.

This may influence the license type you require. The information below describes all possibilities!
The legal license information is covered by the Terms & Conditions. For more information or pricing, please contact your local reseller or callas’ distributor Four Pees.

Desktop licenses

The Desktop versions are intended for interactive use on a workstation. The user will typically open a file in the Desktop product and process that one file. There is also the possibility to select up to 100 files for batch processing. A desktop license can be installed on two computer systems of the same user as long as they are not used at the same time.
Desktop products run on MacOS and Windows.

Licenses for automation

All licenses for automation are for a single server and limited to 8 simultaneous processes. If more parallel processing is needed, the License Server (see below) can be used.
All products are available for MacOS, Windows and Linux.


The Server versions allow for centralized, automated, unattended processing through hot folders. A Server license comes with a free Desktop license that allows for local and remote configuration and provides a processing overview on all local or remote Server queues.


The CLI versions allow for the callas technology to be accessed through a Command-Line Interface. This makes it easy to integrate the callas functionality into your own application or website.


The callas Software Development Kit is a C/C++ library that comes with wrapper interfaces for Java and .NET. It allows you to embed the callas functionality into your own native applications.


A Dispatcher license caters for load-balancing and/or automatic fail-over scenarios. The Dispatcher license will not actually process any files but will distribute them over the “Satellite” licenses in the network. The Dispatcher can be combined with the License Server if needed.


OEM licenses are only available to software vendors and cloud platforms. These licenses may be integrated into products from those vendors and can be deployed with these products to customers of the OEM partner. OEM licenses are only available once an individual agreement between callas and the OEM partner has been met. For more information, contact callas software at

License Server

License Server makes it easy to set up cloud environments and supports automatic scaling scenarios. It runs in the cloud and is maintained by callas software on a 24/7 basis. In order to run callas products, Process and/or Credit cartridges need to be purchased which are stored in individual wallets shipped during the first purchase.

License Server on-premise

The callas License Server on-premise can also be used in private or public cloud environments. It is an independent software that is used in environments that are not connected to the internet or in which License Server in the cloud cannot be used for other reasons. Process and/or Credit cartridges work the same way as in License Server in the cloud.


These license types can only be used when the licensee has at least one of the production licenses listed above. They also have in common that any processing result must not be used for anything else than for testing.

  • The Developer license is a non-production license that can be used for testing purposes in a development environment.
  • A Coldspare license can be used as cold fail-over solution. The system on which it is installed cannot be used for production in parallel with the production licenses it is supposed to provide fail-over for.
  • A QA license can be used for testing or in a staging environment that mirrors a production environment.

Trial licenses

Trial licenses for all products are fully functional and valid for 14 days. Trial licenses with longer validity are available upon request.

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