otp.com
Send and verify one-time codes through a shared API
Authentication
Verify that a person or system is who it claims to be when requesting access.
Mudbase
Build applications with backend services and payments in one platform
World
Proof of human identity for online services
Jumio
Identity verification and risk intelligence across the customer lifecycle
OTPfill
Fill email verification codes from the Mac menu bar
Pair2FA
Share two-factor codes with controlled team access
DevDojo Auth
Add customizable authentication screens to Laravel apps
Rupt
Detect account abuse and apply risk-based access rules
Authenticator App by 2Stable
Keep two-factor authentication codes available across your devices
Clave
Keep time-based authentication codes in a desktop app
Facia
Add liveness and deepfake checks to identity verification
App Lock by Lilucat
Restrict access to selected iPhone apps and websites
Wristband
Add tenant-aware authentication and access control to SaaS apps
Agent Identity
Email, permissions, and verifiable identities for AI agents
Logto
Add sign-in, enterprise identity, and access controls to applications
FrameAuth
Add sign-in, memberships, and paid access to Framer websites
AuthMonster
Two-factor authentication with a companion character
Corbado
Add managed passkeys and understand complete sign-in journeys
Hanko
Add flexible authentication and account management to your app
CLEAR
Verify your identity for airport travel, venue entry, and online services