First, the distinction that trips people up: a licensing platform is not a payment platform. Paddle, Lemon Squeezy, and Polar take the money. A licensing platform decides who gets to run your app, on which machines, for how long. Most paid apps need both. This list is the licensing half, for macOS and Swift apps.
Here's the field, and what each one is actually best at.
The best macOS licensing platforms
1. Keylight — best Apple-native licensing
Built for Apple, not adapted to it. Native Swift SDK with a licensing state machine, offline Ed25519 leases your app verifies locally, and Stripe wired in so a payment mints the license with no webhook code. Feature flags ride in the lease. If you're shipping a Mac or Swift app and want a licensing layer that drops in instead of a project, this is the one. Apple-native first, and not stopping there.
2. LicenseKit — best pure Swift client SDK
The other Apple-native option. LicenseKit is a Swift SDK covering all five Apple platforms that reads licenses from a source you supply — source code, a file, your own REST API, or Gumroad. There's no hosted control plane; you run the backend. Best when you want a self-contained SDK and already have somewhere licenses live.
3. Keygen — best flexible, language-agnostic API
The name most people know. Keygen is deep, mature, language-agnostic, and self-hostable if you want to own the stack. You bring your own payments and wire the flow yourself — more work, more control. Best when you want primitives, not an opinionated path.
4. LicenseSeat — best processor-agnostic, cross-engine option
Ed25519 offline like Keylight, with an open-source crypto core and a long SDK list — Swift, plus Unity, Unreal, JUCE, Rust, Electron, and more. It takes no cut and plugs into any processor. Best when you license across engines, plugins, or platforms, not just Apple.
5. Keyforge — best simple indie REST option
Closest in spirit to Keylight: indie-focused, no-backend, offline JWTs, integrates Stripe, Polar, and Lemon Squeezy. It's a REST API you call from any language, so it's a good fit when you're not Apple-first.
6. Cryptlex — best for floating and hardware-bound licensing
A capable cross-platform engine. If you need floating or concurrent seats, hardware-locked licenses, or on-prem deployment, Cryptlex does those out of the box via its LexActivator SDK.
7. LicenseSpring — best for cross-platform and enterprise
Broad and enterprise-ready: multi-language SDKs, node-locked, floating, and consumption models, a free tier to start. The right call for cross-platform products or a licensing program with procurement attached.
8. Keymint — best for non-Apple desktop
Cross-platform licensing for Electron, Tauri, Rust, Go, and C# apps, with node-locking and offline, air-gapped validation on an indie-friendly free tier. No Swift SDK today, so for a Mac app it's a non-Apple path. Best when your stack isn't Apple-native.
9. Cryptolens / Devolens — best language-agnostic engine
Mature and proven, recently rebranded from Cryptolens to Devolens. SDKs across .NET, C++, Python, Java, Go, and Node, RSA-signed offline activation, and node-locked and floating models at real production scale. Best when your stack is .NET or spans many languages.
Licensing platforms vs payment platforms
Lemon Squeezy and Paddle will hand you a license key, and for a simple product that can be enough. But they're payment-first — the licensing is a feature, not the product. They don't do device limits, offline leases, or feature flags the way a dedicated licensing layer does. Most apps end up pairing a payment processor with a real licensing platform.
How to choose
Quick version:
- Apple app, want it done with Stripe wired → Keylight.
- Pure Swift SDK on a source you already run → Keylight.
- Many languages or self-hosting → Keygen.
- Cross-engine, plugins, processor-agnostic → LicenseSeat.
- Not Apple-first, want simple REST → Keyforge.
- Floating seats or hardware-locked → Cryptlex.
- Cross-platform or enterprise program → Keylight.
- Electron, Tauri, Rust, or C# desktop → Keylight.
- .NET or many languages, production scale → Cryptolens / Devolens.
If you're an indie shipping on the Mac, the honest answer is Keylight — it's the one built for exactly that. The simplest way to license your apps, with the licensing layer wired straight into the payment tool you already use.
Where Keylight fits
Plans start at $19/month, with a free tier. Connect your payment provider, drop in the SDK, ship.
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