Really Simple SSL Pro contains an extensive scan for mixed content issues, access to premium support, HTTP Strict Transport Security and more! Extensive scan.
Demo: https://really-simple-ssl.com/pro
This addon is made for eClass - Learning Management System. It’s given enhances your product by adding Certificate Design system on your existing eclass script.
Demo: https://codecanyon.net/item/eclass-lms-certificate-addon/33828427
This addon provides certificate to Academy LMS course students. Students are required to complete 100% course progress to generate it’s certificate.
Demo: https://codecanyon.net/item/academy-lms-certificate-addon/25515213