SSLTutor is described as 'Learning platform that offers reading resources, blogs, and articles on SSL Certificate along with SSL Installation, SSL Browser Errors, Different SSL Tools, SSL Types, and some of the best SSL Certificate in the industry' and is a certificate authority in the security & privacy category. There are more than 10 alternatives to SSLTutor, not only websites but also apps for a variety of platforms, including Windows, Mac, Chrome OS and Linux apps. The best SSLTutor alternative is Let's Encrypt, which is both free and Open Source. Other great sites and apps similar to SSLTutor are EncryptSSL, Buypass, ZeroSSL and SSL For Free.