PermitCore vs send21

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

PermitCore compared with send21
Detail	PermitCore	send21
What it does	License management platform with client-side encrypted key storage and integrated storefront	Non-custodial crypto payment links and API for people and AI agents
Stage	Not given	Not given
Founded	Not given	Not given
Based in	DE	Not given
Pricing model	Freemium	Paid
Pricing	Free plan: 50 activations/month, always free. Starter: €29/month (1,000 activations/month, 3 months free for new customers). Professional: €59/month (10,000 activations/month, 3 months free for new customers). Enterprise: €299/month (unlimited activations, 3 months free for new customers). Activatio	One fee per payment: 0.49% on $0-$10, 0.39% on $10-$50, 0.29% on $50-$100, 0.19% on $100-$500, 0.14% on $500-$2,000, 0.09% on $2,000-$10,000, 0.04% on $10,000-$50,000, 0.02% on $50,000-$100,000, 0.01% above $100,000. Minimum $0.01, maximum $100. No subscription, setup fee or monthly minimum.
Key features	Client-side AES-256-GCM encrypted key storage with zero-knowledge architecture Eight official SDKs (.NET, Node.js, Python, Java, C++, PHP, Go, Unity) plus REST API Node-locked, floating, offline, subscription, perpetual, and metered licensing models Offline activation with ECDSA P-256 signed tokens for air-gapped environments Customer portal with device management and subscription handling Activation analytics, device tracking, revenue reports, and webhook events from single dashboard License migration from Keygen, Cryptolens, LicenseSpring or custom systems GDPR compliance with Data Processing Agreement and GDPR data export Self-hosted Enterprise deployment with Docker and signing key export for business continuity	REST API with scoped keys and batch drafts up to 25 per call Support for Bitcoin PSBT and batching wallets like Safe No KYC required, encrypted email storage only Idempotency keys for safe retries Shopify connection with custom app and setup help Fee collected separately on Ethereum and EVM chains via Safe batching
What makes it different	Plaintext license keys never stored on servers; zero-knowledge encryption with client-side AES-256-GCM ensures keys remain safe even after a database breach One integrated platform connecting checkout, license creation, and fulfillment without separate services or payment webhooks Business continuity guarantees: offline tokens work without PermitCore servers; Enterprise customers can export signing keys and self-host independently Fast integration: most teams make their first validation call in minutes with maintained SDKs or REST API	Not given
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	11 no change since last check	6 +2 (up) since last check
Trust Flow (Majestic)	6	15
Citation Flow (Majestic)	29	28
Referring domains (Majestic)	30	35

4 details filled in for both companies.

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