OpenSSL - OpenSSL is a free and open source software cryptography library that implements both the Secure Sockets Layer (SSL) and the Transport Layer Security (TLS) protocols, which are primarily used to provide secure communications between web browsers and …

Sim Daltonism - From the perspective of a color blind person, some colors are impossible to distinguish.

Let's Encrypt - Let’s Encrypt is a free, automated, and open certificate authority brought to you by the Internet Security Research Group (ISRG).

Colour Blindness Simulator - Use our Colour Blindness Simulator to reveal how your images may appear to users with a variety of...

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

Colorblind Web Page Filter - Enter a URL, and this tool will render it as someone with color blindness will see it.