Open.IdentityServer and Duende IdentityServer Single Sign-on Products and Services

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Products and Services for Open.IdentityServer and Duende IdentityServer.

Don't Want to Pay a License Fee for IdentityServer?

Migrate from Duende IdentityServer to Open.IdentityServer in 10 minutes and keep your existing infrastructure.

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Need Help Upgrading from IdentityServer4?

Leave the unsupported world of IdentityServer4 and enter the new world of Open.IdentityServer in just 10 minutes.

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Need a Single Sign-on Solution?

Every organization has its own requirements. Let your team focus on what they do best, while our team of experts build a single sign-on (SSO) solution for you.

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Featured Products for IdentityServer

Open.IdentityServer

ASP.NET
Open.IdentityServer

1.0.0

Open IdentityServer, a free forever, fully supported open-source OIDC SDK. 10 minute migration path from IDS4 and Duende.
Open.IdentityServer
Open.IdentityServer

Duende IdentityServer
AdminUI

13.0.3

A Duende IdentityServer AdminUI, provides a web portal and a programmable API to manage your IdentityServer configuration and users.
AdminUI
Open.IdentityServer

Duende IdentityServer

ASP.NET
SAML2P

11.2.0

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.
SAML2P

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Support Services

We have a range of support services for your IdentityServer products and setup.

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

Bespoke Development
Developer Support
Production Support

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Latest Articles

All the latest articles, news and product releases.

Quick Start Open.IdentityServer SSO with Management Console
10 Jun 2026
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.

Nacho Escrig

Job Role

Software Developer

Quick Start Open.IdentityServer SSO with Management Console
Free Open Source IdentityServer, Forever.
02 Jun 2026
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.

Kieran Odinius

Job Role

Head of Sales

Free Open Source IdentityServer, Forever.
Interop issue with 1Password and .NET 10 Passkeys
05 May 2026
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.

Andrew Clymer

Job Role

Managing Director

Interop issue with 1Password and .NET 10 Passkeys

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