Clerk is more than a "sign-in box." Integrate complete user management UIs and APIs, purpose-built for React, Next.js, and the Modern Web.
Cost / License
- Freemium (Subscription)
- Proprietary
Platforms
- Software as a Service (SaaS)

Kanidm is described as 'Identity management server, acting as an authority on account information, authentication and authorisation within a technical environment' and is a identity management tool in the security & privacy category. There are more than 25 alternatives to Kanidm for a variety of platforms, including Web-based, Self-Hosted, SaaS, Linux and Mac apps. The best Kanidm alternative is Keycloak, which is both free and Open Source. Other great apps like Kanidm are ZITADEL , authentik, AuthKit and Hanko.
Clerk is more than a "sign-in box." Integrate complete user management UIs and APIs, purpose-built for React, Next.js, and the Modern Web.

FusionAuth is an auth for any app. Get everything you need for secure registration and user management in minutes. Single-tenant, on-prem or private cloud, custom emails with localization, social login, and more.




FusionAuth is the most popular Windows alternative to Kanidm.
The Gluu Server is a container distribution of free open source software (FOSS) for identity and access management (IAM). SaaS, custom, open source and commercial web and mobile applications can leverage a Gluu Server for user authentication, identity information, and policy...
An open-source, standards-compliant, and flexible OpenID Connect and OAuth 2.0 framework for ASP.NET Core.




OneLogin is a cloud-based IAM solution providing users secure access to cloud applications from any device.
Logto helps you build the sign-in, auth, and user identity within minutes. We provide an OIDC-based identity service and the end-user experience with username, phone number, email, and social sign-in, for web and native apps.




Cloud-based directory services. Alternative to Microsoft Active Directory. Provides LDAP-as-a-Service, RADIUS-as-a-Service. Authenticates, authorizes, and manages employees, their devices and IT applications.


10Duke Identity Provider makes it easy for your customers to access and register to multiple applications with single username and password or using their favorite social login, secures profile data and easily integrates with leading business tools.




IDM365 is a suite of processes and tools that provide easy implementation and continued maintenance of identity and access management roles. IDM365 follows the principles of Role Based Access Control (RBAC) and Attribute Based Access Control (ABAC).


UniFi Identity (IDentity) or UID is an Identity-as-a-Service (IDaaS) platform that provides Cloud-based identity authentication and management services to enterprises.




Silverfort’s Unified Identity Protection Platform is the first to consolidate security controls across corporate networks and cloud environments to block identity-based attacks.


Cloud-IAM is an open source SaaS based on Keycloak to provide an Identity and Access Management as a Service. Perfectly configured and optimized Keycloak IAM, ready in seconds. Keycloak without the pain.


