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What is Duende IdentityServer?

Security infrastructure sits at the heart of modern software, yet most solutions force organizations into an uncomfortable tradeoff: accept vendor lock-in or compromise on security to gain flexibility. Duende IdentityServer resolves that tension. Our platform delivers robust, standards-aligned identity infrastructure built ground-up for .NET by recognized experts and contributors to foundational security protocols — among them OpenID Connect, OAuth 2.0, Backend for Frontend (BFF), and FAPI. Developers get extensive customization by design — complete ownership of the UI, business logic, and deployment environment — paired with the licensing transparency and predictable cost structure that compliance-driven industries like finance and healthcare require. When you need to integrate reliable, modular identity into your stack without sacrificing control or technical depth, Duende is the trusted foundation. We bring the expertise to identity infrastructure, freeing you to invest yours where it matters most.

What is Auth0?

Auth0 adopts a contemporary method for managing identity, allowing organizations to ensure secure access to applications for all users. It offers a high degree of customization while remaining both straightforward and adaptable. Handling billions of login transactions every month, Auth0 prioritizes convenience, privacy, and security, enabling customers to concentrate on their innovative efforts. Furthermore, Auth0 facilitates quick integration of authentication and authorization processes across web, mobile, and legacy applications, featuring advanced Fine Grained Authorization (FGA) that expands the capabilities of traditional role-based access control, thereby enhancing security measures overall.

Media

Media

Integrations Supported

Google Cloud Platform
Amazon Web Services (AWS)
Arctic Wolf
Authsignal
CyCognito
Disqus
ExoSense
Kevel
MATTR VII
Median.co
Next Identity
Nhost
Qobra
RadiantOne
Review Board
Slack
Supabase
Uptrace
WhosOff
Worksphere

Integrations Supported

Google Cloud Platform
Amazon Web Services (AWS)
Arctic Wolf
Authsignal
CyCognito
Disqus
ExoSense
Kevel
MATTR VII
Median.co
Next Identity
Nhost
Qobra
RadiantOne
Review Board
Slack
Supabase
Uptrace
WhosOff
Worksphere

API Availability

Has API

API Availability

Has API

Pricing Information

Free plan
Free Trial Offered?
Free Version

Pricing Information

Free plan
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Duende Software

Date Founded

2009

Company Location

United States

Company Website

duendesoftware.com

Company Facts

Organization Name

Okta

Date Founded

2009

Company Location

United States

Company Website

auth0.com

Categories and Features

Authentication

Biometric
Credential Management
Knowledge-Based Authentication
Mobile Authentication
Multifactor Authentication
Out-of-Band Authentication
Policy Management
Self Service Portal
Single Sign On
Social Sign On

Identity Management

Access Certification
Compliance Management
Multifactor Authentication
Password Management
Privileged Account Management
Self-Service Access Request
Single Sign On
User Activity Monitoring
User Provisioning

Categories and Features

Authentication

Biometric
Credential Management
Knowledge-Based Authentication
Mobile Authentication
Multifactor Authentication
Out-of-Band Authentication
Policy Management
Self Service Portal
Single Sign On
Social Sign On

Customer Identity and Access Management (CIAM)

Access Certification
Access Management
Analytics / Reporting
Automatic User/Device Recognition
Behavioral Analytics
Credential Management
Data Security
Multi-Factor Authentication (MFA)
Privacy / Consent Management
Real Time Notifications
Self-Service Portal
Single Sign On
User Provisioning

Identity Management

Access Certification
Compliance Management
Multifactor Authentication
Password Management
Privileged Account Management
Self-Service Access Request
Single Sign On
User Activity Monitoring
User Provisioning

Serverless

API Proxy
Application Integration
Data Stores
Developer Tooling
Orchestration
Reporting / Analytics
Serverless Computing
Storage

Single Sign On

Biometric
Credential Management
Identity Federation
Multifactor Authentication
Password Management
Policy Management
Social Sign On
User Management

User Provisioning and Governance

Access Governance
Access Verification Workflow
Audits / Reports
Automatic Provisioning / Deprovisioning
Delegated Access Authorization
Identity Synchronization
Lifecycle Management
Multi-Factor Authentication (MFA)
Password Management
Policy Enforcement
Single Sign-On (SSO)
User Self-Service

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