Build licensing, entitlements, and monetization directly into your software with production-ready APIs and SDKs.
LicenseSpring is a developer-first platform for implementing software licensing, entitlement management, and usage-based billing across desktop, SaaS, containerized, and embedded applications. Integrate in days, not months, with an API-first architecture designed for modern development workflows.
LicenseSpring provides the backend infrastructure to issue, validate, and enforce software licenses directly within your application without building it from scratch.
Supported deployment targets include:
On-premise enterprise applications
Cloud and SaaS platforms, containerized environments
Embedded or hardware-based software
Desktop software
LicenseSpring was built as an API-first licensing platform, enabling developers to integrate licensing directly into application workflows.
License API: called by client applications for license checks, activations, and entitlement validation
Management API: used for back-office operations: creating licenses, editing entitlements, and provisioning
Client-side enforcement inside the application
Built-in hardware ID computation and device fingerprinting
Offline license validation
Entitlement caching
Cloud activation via LicenseSpring APIs
Offline file-based activation
Air-gapped code-exchange activation
On-premise license servers
LicenseSpring SDKs are wrappers around the License API. Beyond abstracting the raw API calls, the SDKs add significant functionality that makes it easier to consume server responses within your application, including computing hardware IDs for device fingerprinting, caching entitlements, and handling offline validation logic.
These SDKs integrate directly into your application and handle client-side license enforcement:
C++ (with ARM and RTOS compilation support; includes Rust linker support)
.NET
Java
Python
Go
Swift
Unity (for mobile and cross-platform applications)
Android/Java
In addition to the License API SDKs, LicenseSpring provides Management API wrappers for .NET and Java. These allow back-end services to create licenses, edit entitlements, and manage provisioning programmatically without going through the vendor dashboard.
This is particularly useful for teams that automate license provisioning as part of their order fulfillment, billing, or CRM workflows.
Developers can also call the License API and Management API directly via REST, without using an SDK. This is useful for custom environments, non-supported languages, or teams who prefer to manage their own HTTP client layer.
Using LicenseSpring, you can enforce multiple licensing models directly within your applications, and combine models within a single product to support complex monetization strategies.
LicenseSpring allows developers to control access to application functionality using entitlement-based feature management directly in code.
Common implementations include:
Feature flags for premium functionality
Tier-based feature access (Basic, Pro, Enterprise)
Conditional feature activation based on license type
Usage-limited features with hard or soft enforcement
Add-on module licensing
Unlike SaaS-only licensing platforms, LicenseSpring is built to handle environments where connectivity is limited or completely unavailable.
LicenseSpring includes enforcement mechanisms to help developers protect high-value software from unauthorized use, cloning, and redistribution.
Security capabilities include:
Hardware ID-based device fingerprinting
Virtual machine detection
License cloning prevention
Encrypted license files
Secure license validation
Compared to legacy licensing systems, LicenseSpring is built for developer productivity and integration speed.
Modern REST API with two dedicated surfaces: License API and Management API
Production-ready SDKs across C++, .NET, Java, Python, Go, Swift, Unity, and Android
Direct API access for custom environments and non-standard stacks
Enterprise-grade security with offline, air-gapped, and containerized deployment support
Most developers are in production within days, not months
Explore the documentation, integrate an SDK, and begin implementing licensing in your software.
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