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Authy
Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.
15 Alternatives To Authy
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Auth0
Auth0 is a program for people to get authentication and authorization services for their own business use.
AuthPoint Multi-Factor Authentication
AuthPoint multi-factor authentication (MFA) provides the security you need to protect your assets, accounts, and information. Let your company work confidently and worry-free with the powerful protection of AuthPoint.
Azure Multi-Factor Authentication
Azure Multi-Factor Authentication helps safeguard access to data and applications while meeting user demand for a simple sign-in process.
Duo Security
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.
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FreeOTP
Open source implementation of the two-factor authentication HOTP and TOTP schemes.
Lastpass
LastPass is an online password manager and form filler that makes web browsing easier and more secure.
Let’s Encrypt
Let’s Encrypt is a free, automated, and open certificate authority brought to you by the Internet Security Research Group (ISRG).
Okta
Enterprise-grade identity management for all your apps, users & devices
Ping Identity
Ping Identity provides cloud-based, single sign-on and identity management solutions with their SAML SSO.
Salesforce Identity
Salesforce Identity streamlines the user access with a single login and helps to discover the power of a single, trusted identity for employees, partners, and customers.
Spring Security
The Spring portfolio has many projects, including Spring Framework, Spring IO Platform, Spring Cloud, Spring Boot, Spring Data, Spring Security…
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YubiKey
The YubiKey is a one-time password device for secure login with two-factor authentication
Yubico
YubiKey provides security solutions for strong two-factor authentication using U2F, OTP, PIV, and more.
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andOTP
andOTP is a two-factor authentication App for Android 4.4+