Authlete is an OAuth 2.0 and OpenID Connect backend service from Authlete, Inc., designed for developers and engineers building custom authorization servers and APIs. Unlike turnkey SSO platforms, it provides protocol processing and token management as a service, letting teams implement secure OAuth/OIDC authorization without building complex protocol logic in-house.

It supports all major OAuth flows, advanced security features like PKCE, mTLS, and DPoP, and offers flexible deployment options including managed cloud or self-hosted infrastructure for organizations requiring complete data sovereignty.

The platform meets Financial-grade API security requirements for banks and financial services, supporting FAPI 1.0 Advanced and 2.0 specifications that enable secure open banking APIs and payment systems with the stringent protections required by financial institutions.

The platform provides comprehensive English documentation, SDKs for multiple programming languages (Java, Node.js, Go, Python, Ruby, .NET), and technical support in English to help international development teams implement OAuth and OpenID Connect authorization systems.