Free to protect. Pay for the proof.
The open-source SDK gives you the encryption with no limits. The paid tiers give you the visibility and the exportable compliance evidence a regulated buyer needs.
Open Source
$0
The full SDK. The protection, free forever.
Start Building- @withnen/client + @withnen/server
- ML-KEM-768 + ChaCha20-Poly1305
- Mandatory per-request HMAC
- Encrypted SSE streaming (nenStream)
- In-memory & Redis session stores
- Public protocol spec & threat model
Most popular
Cloud
$79/mo
See every session, rotation, and error in one place.
Start free trial- Everything in Open Source
- Live session & key-rotation dashboard
- Error-rate & latency monitoring
- Searchable audit logs
- Upstash / edge session backends
- Email support
Enterprise
Custom
The proof your auditor signs off on.
Talk to us- Everything in Cloud
- Exportable compliance evidence (ML-KEM-768 per endpoint, timestamped)
- HSM / KMS integration
- SAML / SSO
- Dedicated support & SLA
Not sure you need Nen at all? We say so plainly on the “why not Cloudflare” page — if your only concern is the public transit leg, PQ-TLS already has you covered.