IdentityServer

IdentityServer4 was a free, open-source OpenID Connect and OAuth 2.0 framework for ASP.NET Core, enabling secure authentication and authorization for modern applications. It provided a standards-compliant solution for implementing identity and access control in .NET ecosystems.

Key Features

• OpenID Connect & OAuth 2.0 — Full implementation of industry-standard protocols for authentication and API authorization.
• ASP.NET Core Integration — Built specifically for ASP.NET Core 1.0 and 2.0, offering seamless integration with Microsoft's web framework.
• Customizable Identity Management — Flexible architecture for defining and managing users, clients, and resources.
• Token Services — Issuance, validation, and management of security tokens (JWT, reference tokens).
• Extensibility — Support for custom grant types, validation, and storage providers to adapt to various requirements.

Philosophy

IdentityServer4 was designed to bring professional-grade identity and access control to the open-source .NET community, emphasizing security, standards compliance, and developer productivity.