Authy vs Duo Security: What are the differences?
What is Authy? The easiest way to add Two-Factor Authentication to any website or app. We make the best rated Two-Factor Authentication smartphone app for consumers, a Rest API for developers and a strong authentication platform for the enterprise.
What is Duo Security? Verifies the identity of your users with two-factor authentication. In order to trust that your users are who they say they are, we verify their identity with an easy-to-use two-factor authentication solution, while giving you the ability to enforce stronger user access policies.
Authy and Duo Security can be categorized as "Security" tools.