Software licensing infrastructure for developers
Validate licenses, track activations, and manage entitlements with a modern API. Ship your product, not your licensing system.
Free tier included. No credit card required.
Trusted by developers at companies worldwide
Everything you need to ship licensing
A complete platform for license management, from validation to analytics. Built for developers who'd rather ship features than licensing infrastructure.
License Validation
Validate license keys in real-time with a single API call. Support for online and offline validation with cryptographic signatures.
Activation Tracking
Track machine activations and enforce device limits per license. Deactivate remotely with full audit trails.
Buyer Portal
Give your customers a self-service portal to manage their licenses, view activations, and download releases.
Webhook Automation
Trigger workflows on license events. Integrate with your existing tools via configurable webhook endpoints.
Feature Entitlements
Gate features by license tier. Define entitlements per policy and check them at runtime via the API.
API-First
Built for developers. RESTful API with comprehensive SDKs, detailed documentation, and predictable conventions.
Up and running in three steps
No complex setup, no lengthy onboarding. Get from zero to production-ready license management fast.
Connect
Create an app, define a license policy, and grab your API key. You're up in under a minute.
Configure
Set up policies for activation limits, expiration, and feature entitlements. Use the dashboard or the API.
Ship
Integrate the validation API into your app. Your customers activate, you track everything.
A single API call to validate any license
Integrate license validation into your application with a simple POST request. Get back everything you need: validity, entitlements, metadata, and activation status.
- RESTful API with consistent conventions
- Comprehensive SDKs for popular languages
- Webhook events for real-time automation
- Detailed error responses with actionable messages
curl -X POST https://api.licensesos.com/v1/licenses/validate \
-H "Authorization: Bearer your_api_key" \
-H "Content-Type: application/json" \
-d '{
"key": "XXXX-XXXX-XXXX-XXXX",
"fingerprint": "device_abc123"
}'{
"valid": true,
"license": {
"id": "lic_9k3j2h1g",
"status": "active",
"policy": "pro-plan",
"expiry": "2026-12-31T23:59:59Z",
"entitlements": ["api-access", "premium-support"],
"activations": 3,
"maxActivations": 5
}
}Simple, transparent pricing
Start free and scale as you grow. No hidden fees, no surprise overages.
Starter
For indie developers and small projects getting started with software licensing.
- Up to 50 licenses
- 1 application
- License validation API
- Activation tracking
- Community support
Pro
For growing teams that need advanced licensing features and higher limits.
- Unlimited licenses
- Unlimited applications
- Buyer portal
- Webhook automation
- Feature entitlements
- Priority support
- Custom policies
Enterprise
For organizations with advanced security, compliance, and integration needs.
- Everything in Pro
- SSO / SAML
- Dedicated support
- SLA guarantee
- Custom integrations
- On-premise option
- Audit logs
Loved by developers
Teams of all sizes trust LicenseOS to handle their software licensing.
"LicenseOS replaced our homegrown licensing system in a weekend. The API is clean, the docs are excellent, and we haven't thought about licensing infrastructure since."
"We went from zero to production-ready license management in under a day. The webhook integrations let us automate our entire post-purchase flow."
"The buyer portal alone saved us weeks of development. Our customers can self-manage their licenses, which cut our support tickets in half."
Ready to ship licensing?
Start managing licenses in minutes. Free tier included, no credit card required.