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IdentityServer VS IdentityServer4

Compare IdentityServer VS IdentityServer4 and see what are their differences

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IdentityServer logo IdentityServer

An open-source, standards-compliant, and flexible OpenID Connect and OAuth 2.x framework for ASP.NET Core

IdentityServer4 logo IdentityServer4

IdentityServer4 is an elegant open-source server that comes with great authentication which allows you to implement OpenID connection and OAuth standards designed for the ASP.NET core.
  • IdentityServer Landing page
    Landing page //
    2023-02-03
  • IdentityServer4 Landing page
    Landing page //
    2023-01-04

IdentityServer videos

+ Add

Federated Identity: An intro to OAuth2, Open Id Connect & Duende IdentityServer 5 | Anthony Nguyen

More videos:

  • Review - There's an IdentityServer in my API project - Anders Abel

IdentityServer4 videos

+ Add

Introduction to IdentityServer4 for ASP NET Core Part I

More videos:

  • Review - IdentityServer4: New & Improved for ASP.NET Core - Dominick Baier

Category Popularity

0-100% (relative to IdentityServer and IdentityServer4)

IdentityServer

IdentityServer4

Identity And Access Management
73 73%
Identity And Access Management
27% 27
Identity Provider
79 79%
Identity Provider
21% 21
Network & Admin
61 61%
Network & Admin
39% 39
SSO
100 100%
SSO
0% 0

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare IdentityServer and IdentityServer4

IdentityServer Reviews

10+ Open-source Single-Sign On (SSO) Solutions
If you are looking for a certified and complaint system to OpenID Foundation, with .Net technologies, then IdentityServer is your answer.
Source: medevel.com
Top 5 Open Source Single Sign-On Software In the Year 2021
IdentityServer is an open source free single sign-on software. It is a cross-platform framework based on OpenID Connect and OAuth 2. Further, this open source software provides central authentication and authorization capabilities for multiple applications. It supports federated identities, multiple flows, and API authorization. Moreover, this self hosting software enables...
Source: blog.containerize.com

IdentityServer4 Reviews

We have no reviews of IdentityServer4 yet.
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Social recommendations and mentions

Based on our record, IdentityServer seems to be more popular. It has been mentiond 7 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

IdentityServer mentions (7)

  • Identity server 4
    Its deprecated in favor of Duende Identityserver which introduced a license model. Source: 5 months ago
  • How does cookie based authentication work?
    Tokens usually have a lifetime and they are separate from the user's authentication principals like username and password. Unless you are rolling your own form of token provider (not something that would be recommended) the token creation is handled for you. Take a look at https://identityserver4.readthedocs.io/en/latest/ or if your organization makes under 1M in income a year the free version of what Identity... Source: over 1 year ago
  • ImageSharp leaving the .NET Foundation due to licensing change
    I think Duende (Identity Server) handled the situation pretty well. https://duendesoftware.com/products/identityserver > Standard License Pricing. - Source: Hacker News / over 1 year ago
  • Why is authentication such a sh*t show with .NET 6?
    He's referring to IdentityServer 3/4, which was open sourced, and was not owned by Microsoft. That 3rd party is commercializing their work (and to be fair, it's a lot of work) as https://duendesoftware.com/products/identityserver , and has a different commercial licensing model. Source: almost 2 years ago
  • Show HN: Open-Source Identity Server Written in Go (Ory Kratos)
    I think "Identity Provider" is more correct, no? "IdentityServer" is the name of a specific IdP implemented in .NET (formerly OSS as https://identityserver4.readthedocs.io/en/latest, and now as a more commercial form as Duende IdentityServer: https://duendesoftware.com/products/identityserver). - Source: Hacker News / almost 2 years ago
View more

IdentityServer4 mentions (0)

We have not tracked any mentions of IdentityServer4 yet. Tracking of IdentityServer4 recommendations started around Jul 2021.

What are some alternatives?

When comparing IdentityServer and IdentityServer4, you can also consider the following products

Keycloak - Open Source Identity and Access Management for modern Applications and Services.

ASP.NET Identity - ASP.NET Identity is a membership-based software system designed for the authentication and authorization of the users via building an ASP.NET application.

Auth0 - Auth0 is a program for people to get authentication and authorization services for their own business use.

DotNetOpenAuth - DotNetOpenAuth is a free-to-use compiled library that comes with the real support to your site visitor to login with the help of openIDs via getting control of the ASP.NET control onto the page.

Okta Workforce Identity - Okta Workforce Identity is utility software for enterprises that provides a new way of work that enable your employees, contractors, and partners to use technology on any device.

openiddict - OpenIddict aims at providing a versatile solution to implement an OpenID Connect server and token validation in any ASP.NET Core

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