Self-hosted license management
Your licenses.
Your server.
Your rules.
License key management that deploys in an evening. Paddle & LemonSqueezy webhooks. Ed25519 offline certificates. Native Swift & TypeScript SDKs.
The problem
You sell a macOS app. You need license keys. Your options:
Keygen.sh
$49–299/month. Your data on someone else's server. Another bill that scales with success.
Paddle built-in
Vendor lock-in. No offline validation. Switch payment provider? Rewrite everything.
Build it yourself
2 months of work instead of building features. Key generation, validation, dashboard, webhooks, SDKs…
Zamok: deploy in an evening
Self-hosted. Open source for personal use. All the infrastructure you need, none of the vendor lock-in.
Developer setup
Five steps from zero to production.
Deploy Zamok
Self-hosted Next.js app. SQLite for dev, PostgreSQL for production.
Create a product
Choose validation strategy: online, hybrid, or offline. Set max activations.
Connect payment
Add Paddle or LemonSqueezy webhook. Purchases create licenses automatically.
Integrate SDK
5 lines of Swift or TypeScript. Keychain storage. Zero dependencies.
Ship
Purchases create licenses. Users enter keys. Offline certs handle the rest.
Swift SDK
import ZamokSDK
let zamok = Zamok(
host: "licenses.yourapp.com",
productId: "prod_xxx"
)
let result = try await zamok.activate(
key: "ZAMOK-XXXX-XXXX-XXXX"
)End user experience
Buy your app
Through Paddle or LemonSqueezy. Receives key: ZAMOK-XXXX-XXXX-XXXX
Enter key
SDK validates and stores a JWS certificate in Keychain
Works offline
Certificate validates locally. No internet needed for 1h–30 days depending on strategy
Key features
Self-hosted
Your server, your data. No vendor lock-in. No monthly fees. Deploy anywhere.
Offline certificates
Ed25519 JWS certs. Apps work without internet. Configurable TTL from 1 hour to 30 days.
Native Swift SDK
Keychain storage. Zero dependencies. macOS 13+ and iOS 16+. 5 lines to integrate.
Provider agnostic
Paddle, LemonSqueezy, or manual creation. Switch payment providers without touching your app.
Hybrid billing
Perpetual + subscription for the same product. Your business model, your choice.
Redeem keys
Generate promo keys. Crockford Base32 with Luhn checksum. Offline-verifiable format.
Validation strategies
Choose how aggressively licenses are validated.
Online
Always validates with server
Hybrid
Online-first with offline fallback
Offline
Long-lived certificates for air-gapped environments
Dashboard
Everything you need to manage licenses.
Compared to alternatives
vs Keygen.sh
Self-hosted, no monthly fee, your data stays on your server. Same capabilities, zero recurring cost.
vs Paddle built-in
Provider agnostic — switch from Paddle to LemonSqueezy without app changes. Ed25519 offline certs.
vs building your own
Zamok is already built. Dashboard, webhooks, SDKs, offline certs, redeem keys. Deploy in an evening.
Tech stack
Currently in beta
Zamok is in active development. Join the waitlist to get notified when it's ready for self-hosting.
One BSHK waitlist across all products. Unsubscribe anytime.