Alternatives
An EU-native alternative to Auth0.
Auth0 is mature, US-hosted, and pricing-tiered. Thoryn is EU-only, ARF-aligned, and ships verifiable-credential support without an upcharge. Here's the honest comparison.
Side by side
Thoryn vs Auth0
The honest version. We say where they're better, too.
| Axis | Thoryn | Auth0 |
|---|---|---|
Data residency Thoryn cannot move customer data outside the EU; Auth0 EU tenants exist but the parent company sits in US jurisdiction. | EU-only (Hetzner Germany) | US-hosted, optional EU tenant |
CLOUD Act exposure US-incorporated parent companies are subject to CLOUD Act subpoenas regardless of where data is stored. | Zero — Dutch incorporation | Direct (Okta is US-incorporated) |
eIDAS 2.0 / EUDIW Thoryn ships an OpenID4VP relying-party verifier, ARF 1.4+ conformant, tested against the NL + EU reference wallets. | — | |
Verifiable credentials (SD-JWT VC, mdoc) | — | |
OAuth 2.0 / OIDC federation | ||
Enterprise SAML SSO | ||
SSO tax Auth0 charges materially more for SAML SSO; Thoryn includes it from Developer onward. | No — SSO ships at every tier | Yes — SSO gated behind enterprise tier |
Ecosystem maturity | Younger; growing fast | Very mature; deep marketplace |
Pre-built SDKs | TypeScript, Java, Kotlin, Go, Python | All major languages + frameworks |
NIS2 / DORA evidence pack | On request | |
Pricing transparency | Three public tiers, contact for quote | Public tiers + custom enterprise |
When Thoryn is the better fit
- You operate in the EU and need data residency you can prove with infrastructure, not just a policy document
- Your security review asks the CLOUD Act question and you'd rather answer 'no exposure' than 'we have a DPA for that'
- You need to accept EU Digital Identity Wallet (EUDIW) credentials — Thoryn ships the verifier today
- You're scaling SSO across customers and don't want a per-tier upcharge for SAML
- You want feature work focused on EU-specific compliance (NIS2, DORA, eIDAS 2.0)
When Auth0 is the better fit
- You need an extremely mature integration marketplace with hundreds of pre-built connectors
- Your team has deep Auth0 muscle memory and switching cost > integration savings
- You operate primarily outside the EU and US-hosted is fine
- You need workforce IT features beyond identity (privileged-access management, etc.)
Considering a move from Auth0?
Book a 30-minute migration conversation. We'll tell you when Thoryn is the right call — and when it isn't.