FusionAuth may suit teams managing end users at scale that need configurable authentication and authorization.
Free plan Free trial From $162 a month, billed yearly AndroidiPhone & iPadWebWindowsMacLinux+2
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Best OAuth Server Software 2026
Facts read 29 Sep 2026 – 15 Oct 2026
OAuth server software supports identity and access flows for applications and services. This list helps developers and buyers compare available plans, protocols, and deployment choices.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 FusionAuth | FusionAuth may suit teams managing end users at scale that need configurable authentication and authorization. | 6.6 | $162 a month, billed yearly | Free plan | Android, iPhone & iPad, Web, Windows | 14 Oct 2026 |
| 02 Google Cloud Identity | It suits organizations that need to manage identities, app access, and devices from a central console. | 6.6 | Free plan | Free plan | Android, iPhone & iPad, Web, Windows | 15 Oct 2026 |
| 03 Duende IdentityServer | 6.2 | $5,750 a year | Free plan | Android, iPhone & iPad, Web, Windows | 3 Oct 2026 | |
| 04 Authgear | Authgear suits teams building web or mobile apps that need authentication, identity management or SSO. | 6.0 | $50 usage-based | Free plan | Android, iPhone & iPad, Web, API | 15 Oct 2026 |
| 05 Ory | Ory fits teams building customer, partner, machine, or AI-agent identity systems across cloud or self-hosted environments. | 6.0 | $770 a year | Free plan | Web, Windows, Mac, Linux | 14 Oct 2026 |
| 06 authentik | authentik suits homelab users and organizations needing self-hosted identity controls across applications, devices, and APIs. | 5.6 | $5 a month, billed yearly | Free plan | Web, Windows, Mac, Linux | 11 Oct 2026 |
| 07 Microsoft Defender for Business | 5.6 | — | Free trial | Android, iPhone & iPad, Windows, Mac | 9 Oct 2026 | |
| 08 Kinde | Kinde is aimed at SaaS founders, product teams, and engineers who want authentication, billing, and feature flags in one cloud platform. | 5.5 | $25 a month | Free plan | Android, iPhone & iPad, Web, API | 3 Oct 2026 |
| 09 Okta Customer Identity Cloud | Auth0 may suit organizations building customer sign-in and access workflows across applications, including teams that need single sign-on, passwordless methods, or… | 5.5 | $35 a month | Free plan | Android, iPhone & iPad, Web, Windows | 30 Sep 2026 |
| 10 OpenIddict | 5.5 | Free plan | Free plan | Android, iPhone & iPad, Web, Windows | 29 Sep 2026 |
Compare free plans and paid-from terms with OpenID Connect, SAML, token introspection, machine-to-machine authentication, and deployment model. Platform options include API, web, self-hosted, Linux, Android, and iOS.
02
Google Cloud Identity
It suits organizations that need to manage identities, app access, and devices from a central console.
AndroidiPhone & iPadWeb+4 Record6.6 Visit
03
Duende IdentityServer
AndroidiPhone & iPadWeb+5 Record6.2 Visit
04
Authgear
Authgear suits teams building web or mobile apps that need authentication, identity management or SSO.
AndroidiPhone & iPadWeb+2 Record6.0 Visit
05
Ory
Ory fits teams building customer, partner, machine, or AI-agent identity systems across cloud or self-hosted environments.
WebWindowsMac+3 Record6.0 Visit
6
authentik
WebWindowsMac+3 $5 a month, billed yearly Record5.6 Visit authentik suits homelab users and organizations needing self-hosted identity controls across applications, devices, and APIs.
8
Kinde
AndroidiPhone & iPadWeb+1 $25 a month Record5.5 Visit Kinde is aimed at SaaS founders, product teams, and engineers who want authentication, billing, and feature flags in one cloud platform.
9
Okta Customer Identity Cloud
AndroidiPhone & iPadWeb+4 $35 a month Record5.5 Visit Auth0 may suit organizations building customer sign-in and access workflows across applications, including teams that need single sign-on, passwordless methods, or…
12
Auth0 Guardian
AndroidiPhone & iPad $35 a month Record5.3 Visit Guardian suits people completing MFA on an iOS or Android device and organizations adding Guardian capabilities to their own apps.
14
Descope
AndroidiPhone & iPadWeb+2 $249 usage-based Record5.3 Visit Descope suits teams building B2C or B2B applications that need authentication, user management or authorization.
15
Logto
AndroidiPhone & iPadWeb+3 $24 a month Record5.3 Visit Logto fits developers building consumer apps, SaaS products, or enterprise applications that need authentication and authorization.
18
Frontegg
AndroidiPhone & iPadWeb+1 Free plan Record5.0 Visit Frontegg is aimed at developers and architects building customer-facing products, as well as infosec, customer success, support and product teams.
Before you choose
Compare plans and trials
Free plans are available in this category through free and freemium pricing models. Paid-from terms vary by product and billing unit; examples include $0.01 per user per month, $50 per month, and $3,000 per year.
Trial periods are listed for products such as Asgardeo, Auth0 Guardian, and Curity Identity Server. Check the trial length and the paid-from term before choosing.
Check protocol support
Use the comparison fields to check OpenID Connect and SAML support. Token introspection and machine-to-machine authentication can also affect how an application handles tokens and service access.
Match the deployment model
Deployment models differ across OAuth server software. Review whether a product runs through an API or web interface, supports self-hosting, or targets Linux, Android, or iOS.
Review code and licensing
Open-source code is offered by software in this category. If you need to read or change the code, check the tool's licence and how its deployment model fits your environment.
Questions
Do OAuth server tools offer free plans?
Yes. The category includes software with free plans under free or freemium pricing models.
Which protocols should I compare?
Compare OpenID Connect and SAML support, then check token introspection and machine-to-machine authentication for your integration needs.
Can I self-host an OAuth server?
Self-hosting is a listed deployment option for software in this category. Check the product's deployment model and platform support.
Are free trials available?
Yes. Trial offers include 30 days for Asgardeo, 22 days for Auth0 Guardian, and 14 days for Curity Identity Server.
Does this category include open-source software?
Yes. Open-source code is offered by software in the category. Review the licence before modifying or redistributing code.
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