Best Auth Tools in 2026

Auth tools handle the part of your app no user should ever see fail — sign-up, sign-in, sessions, multi-factor, social login, and SSO. The platforms in this category cover hosted identity providers, self-hostable open-source options, and backend-as-a-service auth bundled with a database. This curated 2026 list of the best auth tools compares pricing, supported flows, enterprise features, and developer experience so engineers can pick the right identity layer. Whether you need passwordless email login, enterprise SAML, or a free open-source self-hosted option, the auth tools below cover every common requirement.

1 tool in this category