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- Best Passkey and WebAuthn Providers What a passkey actually is, how discoverable credentials and attestation work, and the nine providers worth shortlisting once you understand the recovery problem.
- Best Passwordless Authentication Providers Magic links, one time codes and passkeys are three different products with three different failure modes, and email deliverability is the one nobody plans for.
- Best Authorization and Permissions Services RBAC, ABAC and ReBAC explained by worked example, then the services that implement them and what each one does to the latency of your request path.
- Best SCIM Provisioning Tools SCIM is a specification, not a product. What it guarantees, where real implementations diverge, why deprovisioning fails silently, and eight tools that implement it.
- Best Self-Hosted Identity Providers Running the service that gates everything: signing key rotation, session store scaling, user table migrations, disaster recovery, and seven IdPs judged on operations.
- Clerk vs Auth0 vs WorkOS Three different bets: prebuilt UI components you drop in, a mature general platform, and enterprise features as an API for teams that already have auth.
- Auth0 Alternatives Leaving Auth0 is a migration project before it is a product choice. Password hashes, user IDs, MFA enrolment and Actions all behave differently.
- Okta Alternatives Workforce identity and customer identity are different products with different buyers. Split them first, then shortlist alternatives on the correct side.
- Best CIAM Platforms Consumer identity is a different product from workforce identity. Progressive profiling, consent, bot signups, deletion at scale, and eight CIAM platforms compared.
- Best Open Source Authentication Solutions Where the open core boundary really falls, what upgrades and HA cost you, who patches a CVE on a Friday, and nine open source auth projects judged on operations.
- Best Auth Providers for B2B SaaS and Enterprise Multi-tenancy models, per-organization SSO, SCIM provisioning, custom domains and admin delegation, plus nine auth providers built for B2B products.
- Best Enterprise SSO Solutions for B2B SaaS SAML versus OIDC in practice, the per-customer identity provider quirks across Okta, Entra and Google, and eight ways to ship enterprise SSO.