Softorino YouTube Converter - Download YouTube video & audio. Watch and listen offline
Sertifier - Best way to send smart certificates & open badges!
Yout - YouTube to Mp3 Converter
Certopus - Design & Deliver verifiable certificates
You-Get - Command-line utility to download media contents from the web
Certificates by Graphy - Certificates by Graphy lets you share beautiful custom certificates to all your learners at once.