# IdentityServer > Products and services for Open.IdentityServer and Duende IdentityServer Open.IdentityServer and Duende IdentityServer single sign-on products, components, and services from Rock Solid Knowledge. ## Products - [Open.IdentityServer](https://www.identityserver.com/products/openidentityserver): Open IdentityServer, a free forever, fully supported open-source OIDC SDK. 10 minute migration path from IDS4 and Duende. - [AdminUI](https://www.identityserver.com/products/adminui): A Duende IdentityServer AdminUI, provides a web portal and a programmable API to manage your IdentityServer configuration and users. - [SAML2P](https://www.identityserver.com/products/saml2p): Allow IdentityServer to act as a SAML Identity Provider or Service Provider, enabling legacy applications to use your SSO solution and legacy identity providers to support modern applications. - [SCIM for ASP.NET](https://www.identityserver.com/products/scim-for-aspnet): Allows you to automatically synchronize users across multiple applications using the SCIM 2.0 protocol. - [Enforcer](https://www.identityserver.com/products/enforcer): Enforcer delivers fine-grain authorization to your .NET applications. Authorization rules are defined in human-readable policies. - [Passkeys for ASP.NET](https://www.identityserver.com/products/fido2-for-aspnet): Allows your ASP.NET Core website to act as a Passkey (FIDO) Relying Party thanks to WebAuthn and FIDO authenticators. - [Dynamic Authentication Providers](https://www.identityserver.com/products/dynamic-authentication-providers): Allows loading new authentication types without any code changes or downtime. Primarily created for use with IdentityServer external identity providers, it can also be used with any ASP.NET Core AuthenticationHandler. - [WS-Federation](https://www.identityserver.com/products/ws-federation): Allows IdentityServer to act as an identity provider (IdP) using WS-Federation, bringing cross-protocol single sign-on and allowing you to use IdentityServer to log into your legacy applications, such as SharePoint. - [Customized Single Sign-on Solution](https://www.identityserver.com/products/customized-single-sign-on-solution): We deliver a customized single sign-on (SSO) solution precisely built to your specifications ## Services - [Bespoke Development](https://www.identityserver.com/services/bespoke-development): We can develop a single sign-on solution that integrates with your organisation from the ground up or we can enhance your existing IdentityServer solution. Our expert team build these solutions day in day out so can you rest assured that your solution is robust and high quality - [Developer Support](https://www.identityserver.com/services/developer-support): Developing your own custom IdentityServer can be challenging. Making the correct security decisions can be a worry. Our experts are on hand to offer advice and guidance on best practices, through email, phone or on-site. - [Production Support](https://www.identityserver.com/services/production-support): Once deployed, your single sign-on solution becomes a key part of your production environment. Having it fail is not an option. We offer a range of production support packages to help you keep your single sign-on solution running. ## Articles - [Quick Start Open.IdentityServer SSO with Management Console](https://www.identityserver.com/articles/openidentityserver-and-adminui-quick-start-template): Do you want to create a Single Sign-On (SSO) solution based on Open.IdentityServer? Do you want a management UI for managing users and IdentityServer configuration? Then look no further; our Open.IdentityServer & AdminUI code template will have you up and running in less than 15 minutes. - [Free Open Source IdentityServer, Forever.](https://www.identityserver.com/articles/why-we-maintain-and-provide-a-free-forever-open-source-identityserver): Having been part of the IdentityServer ecosystem for over a decade, we now feel it's the right time to offer .NET developers a free, forever IdentityServer SDK. Read this article to know more about why. - [Interop issue with 1Password and .NET 10 Passkeys](https://www.identityserver.com/articles/dot-net-passkeys-and-1password): Interop issue with 1Password and .NET 10 Passkey implementation. The JSON serializer is very strict, causing 1Password Passkeys to fail to authenticate. See how to fix it. - [Managing your IdentityServer configuration with AI](https://www.identityserver.com/articles/managing-your-identityserver-configuration-with-ai): AdminUI 12.0 allows you to manage your IdentityServer configuration using natural language, using the Model Context Protocol client and a Large Language Model of your choice. - [Helping to move from per customer on-premise solution to multi tenanted SaaS](https://www.identityserver.com/articles/helping-to-move-from-per-customer-on-premise-solution-to-multi-tenanted-saas): How we helped XnLeisure on their journey from an on-premise solution to a multi-tenanted SaaS solution, in a multi-phased approach. - [Standards Based Authorization with AuthZen for Dot Net](https://www.identityserver.com/articles/standards-based-authorization-with-authzen-for-dot-net): For decades, identity has been standardised through protocols like SAML and OpenID Connec, but fine-grained authorisation has lagged behind. AuthZen, a new OpenID Foundation standard, aims to change that by enabling centralised access decisions. Rock Solid Knowledge has been involved in shaping AuthZen and now offers a free, open-source .NET library to help developers integrate with any AuthZen compatible authorisation engine. - [How to have consistent Frontend and Backend Authorization for Applications](https://www.identityserver.com/articles/how-to-have-consistent-frontend-and-backend-authorization-for-applications): How we streamlined a single-page application + API to use a common authorization policy from both UI and API, using AuthZen for GS1 - [Modernising Single Sign-On for PitPatPet](https://www.identityserver.com/articles/modernising-single-sign-on-for-pitpatpet): A case study on how we helped a Pet technology company upgrade their SSO solution, with no down time - [Upgrading an International Manufacturer from IdentityServer4 to Duende](https://www.identityserver.com/articles/upgrading-from-identityserver4-to-duende): A case study on helping Nailor transition from legacy identity infrastructure to a supported, future‑proof authentication platform. - [Run IdentityServer and AdminUI With Aspire](https://www.identityserver.com/articles/run-identityserver-and-adminui-with-aspire): Aspire brings powerful tools to streamline development and enhance your project’s capabilities. But how can you implement it in your identity solution? ## Videos - [Videos](https://www.identityserver.com/videos) - [Subscribe](https://www.youtube.com/channel/UCCr3f5a3NBbci6PxljT9VbQ) ## Contact - [Contact](https://www.identityserver.com/contact): Contact the team responsible for Open.IdentityServer and Duende IdentityServer products and services