License management integrations

Third-party licensing integrations

FastSpring integrates with several third-party license management platforms. These tools help you generate and distribute license keys for your digital products after purchase.

FastSpring provides the infrastructure to trigger license generation during checkout, but the third-party provider handles all licensing setup, key logic, and support.

Core integrations with dedicated guides

These integrations have their own dedicated setup pages with step-by-step instructions. You can use these if you're working with more advanced licensing solutions or need platform-specific guidance.

LimeLM

Simple and secure product activation

Quick License Manager (QLM)

Powerful .NET licensing and activation

Nalpeiron

Enterprise licensing platform

10Duke

Identity-based licensing

SoftwareKey

Server-based license activation

Cryptlex

License and release management

Additional integrations with setup guides

The following platforms also integrate with FastSpring and include setup guides or integration examples. These tools are helpful for developers seeking more flexibility or API-driven licensing flows.

Cryptolens - Real-time license generation

Cryptolens is a cloud-based licensing-as-a-service (LaaS) platform designed to support license management for a wide range of application types, including:

Desktop software
Add-ins and plugins (e.g., Office, AutoCAD)
SDKs
Mobile applications
Embedded systems

Cryptolens can generate custom license keys in real-time for delivery through your FastSpring Store.

Note: Cryptolens does not automatically block license keys for returned or refunded FastSpring orders. However, you can still use the Cryptolens API to check if a key was originally issued through a FastSpring purchase.

To integrate Cryptolens with your FastSpring checkout, see the official Integration with FastSpring setup guide.

Elite Licenser - WordPress-based license manager

Elite Licenser is a WordPress plugin that helps you manage product licensing for multiple plugins or themes on a single site. It supports a wide range of programming languages, including PHP, .NET, Java, and Android, and includes features like:

License key generation
Product update management
Built-in Envato license verification
Full license control via API

Elite Licenser provides one centralized system to handle licensing for all of your WordPress products.

Resources

Keygen - API-first licensing-as-a-service

Keygen is a licensing-as-a-service API built for software developers. It provides flexible licensing policies to support a wide range of use cases, including:

Node-locked licenses
Time-limited trials
Identity-based licensing for multiple users and devices
Self-service license and machine management

Keygen’s API-first approach allows you to create and enforce licensing rules programmatically.

Resources

Keygen has created an example of FastSpring integration in a GitHub repository available at:\ https://keygen.sh/integrate/fastspring/
You can find more information about Keygen at:\ https://keygen.sh/.

LicenseSpot - .NET software protection

LicenseSpot offers a licensing, license management, and software protection solution designed specifically for .NET applications. It helps developers protect their software and manage license distribution efficiently.

Resources

You can integrate LicenseSpot with FastSpring using their step-by-step instructions: LicenseSpot Integration Guide
For additional details on features, pricing, and documentation, visit: http://www.licensespot.com/

LicenseSpring - Licensing for Windows and Mac

LicenseSpring is a cloud-based licensing platform built for Windows and Mac software publishers. It supports a wide range of licensing models and offers seamless integration with FastSpring.

Choose your integration path based on your FastSpring implementation:

NetLicensing - Open-standard licensing platform

Labs64 NetLicensing is a Licensing-as-a-Service (LaaS) platform built on open standards. It offers a flexible and scalable solution for software vendors and developers who want to focus on their core product instead of building a license management system from scratch.

Resources

Software_DNA - Copy protection for apps

Software_DNA provides license management and copy protection for downloadable software. It helps developers prevent unauthorized usage and supports flexible licensing for betas, demos, trials, and full versions.

To learn more about Software_DNA, including pricing and features, visit the Softworkz website.

XLS Padlock - Protect Excel workbooks

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

To learn more about the integration, see the XLS Padlock step-by-step integration guide.