Best Authentication Products in 2025

Google Authenticator is a multifactor app for mobile devices.

free

Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.

Verify your customers in under 15 seconds anywhere in the world with a cutting-edge SaaS & API platform for Identity Verification and AML/KYC compliance.

Try for free freemium $0.1 (per credit)

Duo Security provides cloud-based two-factor authentication. Duo’s technology can be deployed to protect users, data, and applications from breaches, credential theft, and account takeover.

Azure Multi-Factor Authentication helps safeguard access to data and applications while meeting user demand for a simple sign-in process.

Auth0 is a program for people to get authentication and authorization services for their own business use.

Open Source

One app to quickly and securely verify your identity online, for all of your accounts.

Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens...

LastPass is an online password manager and form filler that makes web browsing easier and more secure.

How to enable 2 step verification for your accounts? Check our step-by-step guides to easily activate 2FA in all your accounts.

free

Enterprise-grade identity management for all your apps, users & devices

LastPass is an online password manager and form filler that makes web browsing easier and more secure.

Authenticator is a simple, free, and open source two-factor authentication app.

Open Source

Open Source Identity and Access Management for modern Applications and Services.

Open Source