Aseprite - Aseprite is an art program dedicated to the creation of pixel art.
Sertifier - Best way to send smart certificates & open badges!
Pixel Art Studio - A purpose-built drawing tool for pixel artists
Certopus - Design & Deliver verifiable certificates
Piskel - Piskel is a website where designers online create sprites or pixel art.
Certificates by Graphy - Certificates by Graphy lets you share beautiful custom certificates to all your learners at once.