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
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.
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…
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.
andOTP
andOTP is a two-factor authentication App for Android 4.4+