Best 20+ Clerk Alternatives in 2026

Better Auth is a framework-agnostic authentication library that runs directly in your application. It handles user accounts, login sessions, and security features without relying on external services. You keep full control of your user data because everything runs on your own database and server.

The framework provides ready-to-use authentication methods including email and password login, social sign-in with platforms like GitHub and Google, passkeys for passwordless access, and magic link login. It also supports advanced features like two-factor authentication, organization management for team accounts, and role-based access control.

Unlike paid authentication services, Better Auth is completely free with no user limits or hidden costs. It uses modern security practices and actively maintained code to keep your applications safe.

Auth.js is a complete authentication solution that works across different JavaScript frameworks. It provides everything needed to add secure login systems to websites and applications. You can let users sign in through their existing accounts on services like Google or GitHub, or you can use email-based magic links, or even traditional username and password combinations.

The library is runtime agnostic, meaning it adapts to work with Next.js, SvelteKit, Express, Qwik, and other frameworks. It handles session management, protects routes, and connects to databases when needed. Auth.js follows web standards and security best practices, making it both safe and reliable. Since it is open source, the code is publicly available for review and contributions from developers worldwide.

Kinde is an all-in-one platform that handles authentication and user management for your applications. It lets you add secure login systems, manage user permissions, organize customers into groups, and track feature access all from one dashboard.

The platform supports different login methods like passwords, magic codes sent by email, social media accounts, and business single sign-on. It also includes tools for managing teams, setting up different user roles, and controlling which features each customer can access.

What makes Kinde different is that it combines multiple tools into one. Instead of using separate services for login, billing, and feature control, you get everything in one place. This saves time during setup and makes it easier to manage as your business grows.

FusionAuth is a complete authentication system that manages who can access your application and what they can do. You can install it on your own computer, your company servers, or use their cloud service. This flexibility makes it different from most authentication tools that force you to use only their cloud.

The platform supports all modern login methods - traditional passwords, passwordless access, social media logins, and biometric authentication like fingerprints. It follows industry standards like OAuth2, OpenID Connect, and SAML, meaning it works smoothly with other software.

There is a free version with all core features, and paid plans add extra security, support, and cloud hosting. The free version has no user limits, making it suitable for projects of any size.

Stack Auth is a complete authentication solution that handles all the complex parts of user login and management. When you add it to your application, you get ready-made login pages, account settings, password reset flows, and user dashboards without writing code for these features yourself.

The platform supports multiple ways for users to sign in, including regular passwords, social logins through Google or GitHub, magic email links, and modern passkeys using fingerprints or face recognition. It also handles advanced features like two-factor authentication for extra security, team management for business apps, and permission systems to control what different users can do.

Stack Auth is fully open-source and licensed under MIT and AGPL, meaning you can see exactly how it works and modify it if needed.

Logto is an authentication and identity management platform that handles user sign-in, permissions, and security for your applications. You can use it as a cloud service or install it on your own servers since it's open-source.

The platform supports multiple ways for users to sign in: traditional passwords, email codes, phone verification, social media accounts like Google and Facebook, or enterprise systems through Single Sign-On. It also includes advanced features like multi-factor authentication for extra security and role-based access control to manage what different users can do.

Logto works with over 30 programming languages and frameworks including React, Next.js, Vue, Python, and Go. It's trusted by companies worldwide and meets strict security standards with SOC 2 Type II certification.

MojoAuth is a tool that lets users log into apps and websites without typing passwords. It offers several ways to verify who you are, such as sending a special link to your email, texting a code to your phone, or using your fingerprint or face scan.

The platform uses modern security standards called FIDO2 and WebAuthn. These make it nearly impossible for hackers to steal login information. MojoAuth also lets users sign in with accounts they already have, like Google or Facebook.

There are three pricing plans available. The free plan works for smaller sites with up to 25,000 active users per month. Paid plans add more features and support bigger companies. All plans include strong security protections built in.

Okta is a tool that handles identity and access management in the cloud. It lets businesses control who can use their apps and resources safely. When someone needs to log in, Okta checks their identity and decides what they can access based on company rules.

The platform includes features like single sign-on, where users log in once and access all their apps without entering passwords again. It also offers extra security checks through methods like codes sent to phones. Okta connects with employee directories and can automatically create or remove accounts when people join or leave a company.

The service is built for the cloud, so it scales easily and works from anywhere. Companies can start with basic features and add more as needed.

Auth0 is an identity and access management platform that handles user authentication and authorization for web and mobile applications. It works as a service that sits between your application and your users, managing who can access what.

The platform supports many login types including traditional passwords, social media accounts like Google or Facebook, fingerprint recognition, and one-time codes. It also provides single sign-on, which lets users log into multiple apps with one set of credentials.

Auth0 handles security requirements like checking for breached passwords, blocking suspicious login attempts, and verifying user identity through multiple factors. Developers can set it up quickly using ready-made tools and code libraries, saving months of development time and reducing security risks.

WorkOS is an API platform that provides enterprise authentication and identity features for web applications. When you need to add features like company login systems or user management to your app, WorkOS provides the technical foundation.

The platform includes several key products. AuthKit handles user login and management with support for passwords, social logins, and security features. Single Sign-On lets enterprise customers use their company login systems. Directory Sync keeps user lists updated automatically from company directories. Audit Logs track important security events. Radar protects against bots and fake accounts.

Developers integrate WorkOS using APIs and software libraries for popular programming languages. The platform handles the complex technical work while you focus on building your main product.

LoginRadius is a tool that handles user identity and login management for your digital products. When someone visits your website or app, LoginRadius manages their registration, login, and account security. It offers multiple ways for users to sign in, including traditional passwords, social media accounts like Google or Facebook, or passwordless options like magic links.

The platform uses ready-to-use tools that developers can add to any website or mobile app with a few lines of code. It includes features like single sign-on, which lets users log in once and access multiple sites, and multi-factor authentication for extra security.

There are different plans available, from a free version for small projects to enterprise solutions for large companies with millions of users.

SuperTokens is an authentication framework that handles user login, registration, and session management for your applications. It provides ready-made solutions for email password login, social login through providers like Google and Facebook, passwordless authentication using magic links or one-time codes, and more.

The tool uses a unique design where your backend sits between your frontend and SuperTokens. This gives you more control to customize the authentication process while keeping it secure. SuperTokens manages the complex security tasks automatically, including protecting against common attacks and handling session tokens.

You can choose to run SuperTokens on your own servers completely free, or use their managed cloud service that handles all the technical work for you.

Magic is a software development kit that helps developers add secure login systems to their applications. When a user wants to log in, they receive a one-time code via email or SMS instead of typing a password. This makes the login process faster and more secure.

The tool also creates digital wallets for users automatically. These wallets are safe because Magic uses advanced security called Delegated Key Management System. This means users control their digital assets, but they don't need to remember complex backup phrases that other wallet systems require.

Magic works with many platforms including websites, mobile apps, and desktop applications. It supports connections to blockchain networks like Ethereum, Polygon, and many others. The system handles millions of logins and transactions every day with strong security protection.

Hanko is a complete authentication platform that handles user login and account management for web and mobile apps. Instead of building login systems from scratch, developers can add Hanko in minutes using ready-made components.

The platform supports multiple ways to log in: passkeys for password-free access, traditional passwords, email codes, and social login through Google or GitHub. It also includes two-factor authentication and enterprise single sign-on. Everything is built on open-source code, meaning you can see exactly how it works and modify it if needed.

Hanko offers both a free cloud-hosted version and a professional version with more features. You can also download and run it on your own servers for complete data control.

Amazon Cognito is a cloud service that manages user authentication and authorization for applications. It has two main parts: user pools and identity pools. User pools store user profiles and handle login, while identity pools give users access to AWS resources.

You can let users sign in with usernames and passwords, or through social accounts like Google and Facebook. The service also supports business login systems through SAML and OpenID Connect. It includes security features like password requirements, account verification through email or SMS, and protection against suspicious login attempts.

Cognito offers three pricing levels: Lite for basic needs, Essentials with standard security, and Plus with advanced threat protection. The free tier includes 10,000 active users monthly, making it easy to start.

Descope is a platform that handles all authentication and user management tasks for your application. You can build complete login systems using visual workflows, or integrate directly through code using their SDKs and APIs.

It supports many authentication methods: passwordless login through magic links, social logins like Google and Microsoft, multi-factor authentication, single sign-on for businesses, and traditional passwords. The platform also includes security features like bot protection and fraud prevention.

Descope works as a complete identity solution. It manages user sessions, handles permissions and roles, supports multiple tenants for business applications, and connects with other services through webhooks and APIs. There is a free version for small projects and paid plans with more features for growing companies.

PropelAuth is a tool that adds user authentication to your business software. It provides ready-made login pages, signup forms, and user management screens that you can customize with your brand colors and logo.

What makes PropelAuth different is its focus on business needs. It understands that your customers work in teams, so it includes features for creating organizations, inviting team members, and managing who can do what. The platform handles password security, two-factor authentication, and social logins automatically.

PropelAuth works with popular programming languages including React, Python, Node.js, and Rust. You can start with the free plan and upgrade as you grow. The service runs in the cloud, so there is nothing to install or maintain on your servers.

Authentik is a tool that manages how users sign in to your applications and services. Think of it as a central security checkpoint that verifies who someone is before letting them access your systems.

It supports multiple authentication methods, from simple passwords to advanced options like security keys and fingerprints. Authentik can connect to social login providers like Google or GitHub, or it can manage its own user database. The platform uses industry-standard protocols, which means it works with thousands of applications without custom coding.

Authentik is open source, meaning anyone can review its code for security issues. You can install it using Docker or Kubernetes, making it suitable for any size organization. There are free and paid versions available, depending on your needs.

Silverfort is an identity security platform that protects organizations from attacks that use stolen passwords and compromised accounts. It works by integrating with your existing identity systems like Active Directory, Microsoft Entra, and cloud providers to monitor every login attempt across your entire network.

What makes Silverfort special is its ability to protect systems that other security tools cannot reach. This includes old legacy applications, command-line tools, service accounts, and industrial systems. The platform requires no agents or proxies, meaning you do not need to install software on servers or change how your applications work.

Silverfort provides features like universal multi-factor authentication, real-time threat detection, privileged account protection, and service account security. It helps organizations stop lateral movement attacks, prevent ransomware spread, and meet compliance requirements.

Tesseral is a complete authentication system designed for business-to-business software applications. It handles user login, permission management, and security features so developers can focus on building their main product.

The platform supports multiple ways for users to log in, including passwords, magic links, Google, GitHub, and Microsoft accounts. For larger companies, it includes enterprise features like SAML and OIDC single sign-on, which lets employees use their work accounts.

Tesseral is open-source with an MIT license, meaning anyone can view, modify, and use the code. You can choose between using their managed cloud service or running Tesseral on your own servers. The platform works with popular frameworks like React, Next.js, Python, and Node.js through ready-made code packages.

Ory is a complete identity management system that handles user authentication and access control for web and mobile applications. It combines several specialized tools that work together to protect your application and manage who can access what.

The platform includes components for user login and registration, OAuth and social sign-in connections, permission management, and API security. Unlike closed systems where you cannot see how things work, Ory is open source, meaning the code is public and can be reviewed by anyone. This makes it more trustworthy and secure.

You can choose to use Ory Network, which is the hosted cloud version that Ory manages for you, or download the open-source version and run it on your own infrastructure. Both options give you strong security and the ability to customize everything to match your needs.

Pomerium is a zero trust access proxy that sits between users and internal applications. It verifies identity and permission before allowing access to any resource. The tool works by connecting to your existing identity provider like Google, Okta, Azure, or others.

When someone tries to access an application, Pomerium checks their identity, device status, and other factors against your security rules. Only if everything matches will it grant access. This happens in real time for every request, not just once during login.

Pomerium is open source and can be self-hosted, meaning your data stays under your control. It offers both free and paid versions, with the paid options adding team features and support for larger organizations.

Frontegg is a ready-to-use system that handles everything related to user accounts and access in your software. When you add it to your product, users get a professional login page, account settings, and security features automatically. It works like adding a pre-built module to your application.

The platform handles complex tasks like letting companies use their own login systems, managing different user roles, and keeping everything secure. It supports multiple ways to log in including passwords, social accounts like Google, and business systems.

You can customize how everything looks to match your brand. The free version works for smaller projects, while paid plans add features needed by bigger companies with stricter security requirements.

Stytch is an authentication service that helps developers add login and security features to their websites and mobile apps. Instead of building authentication from scratch, developers can use Stytch's ready-made tools and code libraries to quickly set up secure user login.

The platform supports many login methods including magic links sent by email, one-time passwords via text message, social logins like Google and Facebook, and traditional passwords. It also includes advanced security features like device tracking and bot detection to prevent fraud and account takeovers.

Stytch offers two main products: one for consumer apps where individuals sign in, and another for business apps where entire companies need single sign-on and team management features.

OneLogin is a cloud platform that manages who can access your company's apps and data. It acts as a central hub where users log in once and gain access to all their authorized applications without needing separate passwords for each tool.

The platform includes several key capabilities: single sign-on lets users access multiple apps with one login, multi-factor authentication adds extra security layers, and automated user provisioning creates and removes accounts automatically when people join or leave your organization. OneLogin also connects with your existing directories like Active Directory or cloud systems like Workday.

Unlike traditional methods where IT teams manually manage each user's access, OneLogin automates these tasks while maintaining strong security through modern authentication methods and access policies.

Cryptr is an authentication tool that connects business applications to enterprise identity systems. When a software company uses Cryptr, their customers can log in using their company credentials instead of creating new passwords.

The platform supports three main services: Universal Login for basic authentication with passwords and email links, Single Sign-On which connects to corporate identity systems using standards like SAML, and Directory Sync that automatically adds or removes user accounts when employees join or leave a company.

Cryptr provides an API that developers can use with just a few lines of code. It works with many programming languages and frameworks. The service includes a free plan for small teams and paid plans for businesses that need enterprise features. Companies use it to meet security requirements that large customers demand.

Casdoor is a complete identity management solution that handles user authentication and authorization for your applications. It supports OAuth 2.0, OpenID Connect, SAML, CAS, and LDAP protocols, making it compatible with almost any application or service.

The platform includes a user-friendly admin panel where you can manage users, set up authentication methods, and control access permissions. It allows users to log in with passwords, social media accounts like Google and Facebook, or security keys. The system also supports advanced features like multi-factor authentication and biometric login.

You can use Casdoor as a cloud service or install it on your own servers. It works with multiple databases and integrates easily with existing systems through synchronization tools.

Ping Identity is a complete security platform that manages who can access your business applications and data. It acts as a gatekeeper, checking user identities before allowing access to sensitive information. When someone tries to log in, Ping Identity verifies they are who they claim to be using various methods like passwords, phone authentication, or fingerprints.

The platform includes several key tools: single sign-on lets users access multiple apps with one login, multi-factor authentication adds extra security layers, and access management controls what each user can see or do. It also includes API security to protect data connections and directory services to store user information. Ping Identity works with thousands of apps and can be set up in the cloud or on your own servers.

Authorizer is a tool that adds login and user management to your website or app. You connect it to your existing database, and it creates a complete system for users to sign up, log in, and manage their accounts. Unlike paid services, you own all the code and data.

It supports over 11 different databases including popular options like PostgreSQL, MySQL, MongoDB, and SQLite. You can let users log in with email and password, social media accounts like Google and Facebook, or magic links sent to their email. The tool also includes features like password reset, email verification, and role-based access control.

Because it's self-hosted, you deploy it on your own servers using Docker, Kubernetes, or cloud platforms. This gives you complete control and no per-user pricing.

Web3Auth is a tool that helps websites and apps add blockchain wallet features through familiar login methods. When you sign in with your Google account or email, Web3Auth creates a secure wallet for you in the background. You do not need to understand blockchain technology or manage complicated passwords.

The system uses something called Multi-Party Computation to split your private key into pieces. These pieces are stored in different safe places, so no single location has your complete key. This protects you from hackers and lost devices.

Web3Auth works with many blockchains including Ethereum, Solana, and Polygon. Developers can add it to mobile apps, websites, and even games. There are free and paid versions depending on how many users you have.