Everything.PM - 300+ resources & tools for PMs, sorted by votes
Sertifier - Best way to send smart certificates & open badges!
PM Starter Pack - Practical guide on how to get started in product management
Certopus - Design & Deliver verifiable certificates
Product Manager Handbook - Interviews w/ product managers + weekly newsletter
Accredible - Accredible is the new digital credential standard for the online learning age.