AuthForge

AuthForge is a drop-in licensing API for desktop apps, plugins, bots, and any installable software. You generate license keys, your app validates them through an official SDK (Python, Node.js, Go, Rust, C#, or C++), and AuthForge handles hardware binding, seat limits, expiry, and revocation. A working integration is a few lines of code and takes under ten minutes. The difference from KeyAuth, Keygen, and Cryptolens is the billing model. They charge flat monthly tiers that cap users, apps, or features. AuthForge is purely usage-based, on one prepaid credit pool with unlimited apps, licenses, and devices. A successful validation costs 1 credit. After that, your app runs on a signed session for a grace period you choose (24 hours by default, up to 7 days) with no further network calls. If you want fast revocation and concurrent-use detection, turn on optional online check-ins, billed at 10 per credit. Failed validations are free, and per-app burn caps stop a runaway bug or flood from draining your balance. Credits never expire. They start at $10 for 10,000 and drop to $0.15 per thousand at volume, with auto-refill. For machines that never touch the internet, you can mint a signed .authforge license file for 1 credit. The SDK verifies it locally against your public key and the machine's HWID, with no network call and no app secret shipped in the build. Security is on by default: every success response is Ed25519-signed and verified locally by the SDK, and validations carry per-request nonces, so a cracked client can't be fed a forged or replayed "valid" response. Signing keys are KMS-encrypted at rest and can be rotated with zero downtime. You also get HWID and IP allow/deny lists, a self-ban endpoint your app can call when it detects tampering, and TOTP MFA with roles for your team. Beyond key checks: - Flexible binding: 1–16 device seats per license, unlimited-seat keys, or identity-based binding to Discord or Telegram IDs. - Feature control: license- and app-level variables deliver feature flags and plan tiers inside the authenticated session. - Payments: built-in Stripe and Lemon Squeezy integrations turn a successful payment into a delivered license automatically, with webhook verification and replay tooling. - Customer portal: buyers sign in with an emailed code and self-serve HWID resets within your cooldown policy, instead of emailing support. - Plus: signed webhooks, a scoped REST API that never costs credits, and an affiliate program. Docs ship with llms.txt, an MCP server, and an AGENTS.md in every SDK repo, so AI coding agents can wire up the SDK for you. Try the dashboard demo with no signup, or create an account and start with 1,000 free credits, no card required.