License Management Integrations

Below is a list of Third-Party Integrations that FastSpring currently supports. Click on the drop-down to learn about each integration and how to apply it to your FastSpring Store. FastSpring also offers integrations with:

Because these are third-party solutions, please reach out to their support teams for help.


Cryptlex is a cloud-based licensing solution that provides license, identity, and software release management. Cryptlex allows you to license and distribute your desktop apps, mobile apps, on-premise software, IoT apps, and other digital goods. This Cryptlex integration does not support subscription-based licensing. If you need a subscription-based licensing solution, please contact Cryptlex.

You can sign up for a free Cryptlex account and integrate their service with FastSpring.

FastSpring App Setup

  1. To integrate with Cryptlex, you need to set up a license fulfillment action in the FastSpring App. The fulfillment action issues a license on a product, to appear on the completion page and in customers’ receipt email messages (by default).
  2. In the FastSpring App, navigate to Products > Products. Click the product to which you want to add a license fulfillment.
  3. In the Fulfillment section of the product details, click Add New Fulfillment.
  4. In the Add Fulfillment Action dialog, select Generate a License. In the resulting drop-down list, select Script (PHP or JavaScript). Click Next.
  5. Select the desired options for the Output Format and License Name, and ensure that the Script Type is set to PHP. Click Create.
  6. In the Script Source Code (PHP) field, replace the existing placeholder content by copying and pasting in the PHP script found at the following URL:
  7. Edit the script to replace the following placeholders with the information from your Cryptlex account:
  8. Save your changes.

For further assistance integrating with Cryptlex, please contact Cryptlex’s support team.


Cryptolens offers a cloud-based licensing as a service (LaaS) platform to help you to license any type of applications, which includes:

  • Desktop apps
  • Add-ins / Plug ins (eg. to Office or AutoCAD)
  • SDKs
  • Mobile apps
  • Embedded systems
  • Cryptolens can generate custom license keys in real-time for distribution via your FastSpring Store.

The Cryptolens integration does not currently support license key blocking for returned or refunded FastSpring orders. However, you can use Cryptolens to generate license keys and then use their API to validate that a given key was originally issued in conjunction with a FastSpring order.

Instructions for getting started with integrating Cryptolens into your FastSpring purchase flow can be found at

Elite Licenser

Elite Licenser is a WordPress plugin for product licensing. It manages product updates, generates license keys, includes a built-in Envato licensing verification system, provides full license control, and more. It has a full set of APIs, so you can interact with it using a variety of methods. One app handles the licensing of all your products. Elite Licenser can support any language (such as PHP, .Net, Java, or Android). Also, you can add licensing to more than one WordPress plugin or theme, and it can be installed on the same WordPress site.


You can find more information about Elite Licenser at

For assistance with Elite Licenser, please contact their support team at


Keygen is a licensing-as-a-service API for software developers. Keygen offers licensing policies that allow you to offer and control various types of licenses from node-locked licenses to time-limited trials. It includes identity management features “to support multiple licenses per-user, and allow users to perform self-management actions for their licenses and machines.”

Keygen has created an example of FastSpring integration in a GitHub repository available at

You can find more information about Keygen at


LicenseSpot provides a solution for licensing, license management, and software protection for .NET. You can find step-by-step instructions to help you integrate LicenseSpot with FastSpring on LicenseSpot’s documentation site.

For more information on LicenseSpot’s features, pricing and documentation, visit


LicenseSpring is an enterprise-class, cloud-based licensing platform for both Windows and Mac software publishers. LicenseSpring provides a license management solution with support for a variety of licensing models and seamless FastSpring integration.


Labs64 NetLicensing is a solution in the Licensing-as-a-Service (LaaS) sector. Based on open standards, it provides an integrated and scalable platform for software vendors and developers who want to concentrate on their product’s core functionality instead of spending resources on developing their own license management software.


Sofware_DNA provides software license management and copy protection services. Implementing license management helps software developers maximize revenues and minimize unauthorized use of the software. At the same time, Software_DNA offers flexible licensing options for betas, previews, demos, and retail versions.

To learn more about Software_DNA, including its features, pricing and documentation, visit the Softworkz site.

SoftwareKey SOLO Server

SOLO ServerTM is the online licensing server for the SoftwareKey System. The SoftwareKey System is a flexible and scalable software licensing system.

XLS Padlock

XLS Padlock is a software tool designed to protect Excel workbooks, VBA code, macros, and Excel formulas. XLS Padlock offers a subscription kit that connects FastSpring subscriptions to Excel workbooks protected by the XLS Padlock software.

To learn more about the integration, see their step-by-step guide to connect FastSpring to XLS Padlock .