Keycloak
authentik
ZITADEL
Authelia
Hanko
AWS Identity and Access Management
Auth0
Single Sign-On for Your Self-Hosted Universe 🐈⬛🔒

ASP.NET Identity
ASP.NET SAML
PwdLess
Okta Workforce Identity
OAuth
OneLogin
IdentityServer
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.

Which is more popular?
Based on our record, DotNetOpenAuth seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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VA
VoidAuth
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| Website | voidauth.app | dotnetopenauth.net |
| Listed in |
What each product offers, as listed by its team.

Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
No analysis of DotNetOpenAuth yet.
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using VoidAuth and DotNetOpenAuth. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking VoidAuth since Jan 2026.
But if the OpenID server would be for a intranet or low number of requests, you can go ahread (in my opinion) and the post also recommends http://dotnetopenauth.net/ because has a OpenID provider and samples. Source: almost 4 years ago
When comparing VoidAuth and DotNetOpenAuth, you can also consider the following products.

Open Source Identity and Access Management for modern Applications and Services.
Compare Keycloak to VoidAuth or DotNetOpenAuth:

ASP.NET Identity is a membership-based software system designed for the authentication and authorization of the users via building an ASP.NET application.
Compare ASP.NET Identity to VoidAuth or DotNetOpenAuth:

authentik is an open-source identity provider focused on flexibility and versatility.
Compare authentik to VoidAuth or DotNetOpenAuth:

ASP.NET SAML is an open-source authentication utility that has been used for exchanging authentication and authorization data between the channels.
Compare ASP.NET SAML to VoidAuth or DotNetOpenAuth:

The Identity Infrastructure for Modern B2B SaaS
Compare ZITADEL to VoidAuth or DotNetOpenAuth:

PwdLess is an open-source and reliable authentication server that legitimizes you to register or login users without the need for a password.
Compare PwdLess to VoidAuth or DotNetOpenAuth: