Blockcerts
7.7#2 in credentialing softwareFree planFree planAndroidiOSWebAPI
VisitBlockcerts suits institutions issuing credentials and people who need to receive, hold, share, or verify them. It also offers tools for developers integrating verification or issuance.
Open Badge Passport suits people who want to collect, organise, and share Open Badges, or build a CV around them. It also suits badge earners who want to assemble evidence or create micro-portfolios.