Top Clerk alternatives

Castle

Castle is a platform for identity and fraud risk management, helping teams prevent fraud during signup, login, and transactions through an integrated SDK.

UAE PASS

UAE PASS is a national digital identity app for accessing online services, signing documents, and managing official records securely in the UAE.

Auth0

Auth0 is an identity and access management platform that simplifies user authentication and authorization for various applications.

Auth Armor

Auth Armor is a secure authentication platform using biometrics for easy, passwordless login and enhanced user identity management across applications.

Privy

The Privy app provides secure digital signatures and digital ID solutions for businesses in Indonesia, enabling legal online transactions and identity verification.

Authsignal

Authsignal is an authentication platform offering passkeys and passwordless solutions for secure customer identity verification and fraud mitigation.

Passage by 1Password

Passage by 1Password enables passwordless sign-in using passkeys for apps and websites, simplifying authentication integration and enhancing security.

Userfront

Userfront is an authentication platform that simplifies user login and management for applications, supporting customizable flows and secure access across multiple platforms.

Dynamic

Dynamic is a multi-chain wallet authentication and authorization platform that provides a user-friendly login experience.

LoginID

LoginID is an authentication platform that provides passwordless, biometric solutions for secure login across various industries, enhancing user experience and security.

Stytch

Stytch is an identity platform providing secure, passwordless authentication solutions for developers, including SDKs for easy integration in web and mobile apps.

WhatsAuth

WhatAuth is a secure OTP solution using WhatsApp for authentication tasks like login, password recovery, and transaction verification, offering a cost-effective alternative to SMS.

GPT Auth

The GPT Auth app allows users to customize their GPTs with no-code actions, enabling connections to any API for data management.

AuthSmith

AuthSmith provides authentication and access control for apps: email/password, social sign‑in, SSO, MFA, role-based access, activity analytics, alerts, API integrations, and encrypted user data.

Memberstack

Memberstack integrates user authentication and payment processing into websites, allowing for secure membership management and customization in Webflow projects.

Youverse

Youverse allows users to manage accounts and authenticate identity using facial recognition without disclosing biometrics or requiring passwords.

SuperTokens

SuperTokens is an open-source user authentication solution that simplifies secure login processes for web and mobile applications.

Tesseral

Tesseral is an open-source platform for managing authentication and authorization in B2B software, allowing developers to handle user identities securely and efficiently.

Okta

Okta is an identity management platform that secures user access to applications and resources through single sign-on and multi-factor authentication.

FusionAuth

FusionAuth is an identity and access management platform that offers secure authentication and authorization features for applications.

Microsoft 365 Admin

The Microsoft 365 Admin app allows administrators to manage users, devices, and services, and perform tasks like resetting passwords and creating support requests on the go.

Descope

Descope is a customer identity management platform that simplifies secure application access through passwordless login, MFA, SSO, and customizable user journeys.

LoginRadius

LoginRadius is a cloud-based identity and access management platform that provides user authentication, identity verification, and account protection for web and mobile applications.

OTPLESS

OTPLESS is an authentication platform that simplifies user sign-in for apps and websites, offering various secure verification methods without traditional passwords.

Microsoft Entra Admin Center

Microsoft Entra Admin Center manages identities and access across environments, offering features like user management, role-based access, and conditional access.

MojoAuth

MojoAuth is a passwordless authentication solution that allows users to verify their identities securely without passwords, improving security and user experience.

Ory

Ory app manages user identities and access with features like passwordless login and multi-factor authentication, supporting secure authentication and authorization across platforms.

Frontegg

Frontegg is a user management platform for B2B SaaS, offering tools for authentication, subscription management, and access control with a self-service admin portal.

Logto

Logto is an open-source identity and access management solution for developers, offering authentication and authorization for modern apps and SaaS products.