Credly is described as 'is the end-to-end solution for creating, issuing and managing digital credentials. Thousands of organizations use Credly to recognize achievement'. There are three alternatives to Credly, not only websites but also apps for SaaS. The best alternative is Certificate Maker, which is free. Other great sites and apps similar to Credly are Virtualbadge.io (Freemium) and Badgr (Freemium, Open Source).
Virtualbadge.io is a software that offers several options to issue digital certificates and digital badges in an automized way. The aim is to help companies promote their brand by making their customers online promoters.