Authy vs OpenSSL: What are the differences?

Developers describe Authy as "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. On the other hand, OpenSSL is detailed as "Full-featured toolkit for the Transport Layer Security and Secure Sockets Layer protocols". It is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. It is also a general-purpose cryptography library.

Authy and OpenSSL can be primarily classified as "Security" tools.

Some of the features offered by Authy are:

• Very secure- We take security seriously. We use industry standard secure algorithms (HMAC RFC 4426) and 256 bits keys which are always encrypted at rest.
• Fully redundant- The Authy API is deployed accross different PCI level 1 data-centers and it's fully redundant. We also use a DNS provider with anycast support. We've had 100% availability since 2011.
• Great user experience- You connect to Authy using a transparent REST API which allows you to customize the experience you want for your users.

On the other hand, OpenSSL provides the following key features:

• Robust
• Commercial-grade
• Transport Layer Security

According to the StackShare community, OpenSSL has a broader approval, being mentioned in 3996 company stacks & 12 developers stacks; compared to Authy, which is listed in 25 company stacks and 54 developer stacks.