People Background Check - People Background Check is a people search service that provides public records, criminal record...
NoPass.me - Open-source identity verification
IDCrawl - Find people online. IDCrawl.com is a free people search engine that organizes social media profiles, public web information, phone numbers, email addresses and criminal records.
Amazon Cognito - Amazon Cognito lets you add user sign-up, sign-in, and access control to your web and mobile apps quickly and easily. It scales to millions of users and supports sign-in with social identity providers and enterprise identity providers via SAML 2.0.
PeekYou - PeekYou is a free people look website that spots personals at the focal point of the internet.
Civic Token - Access to identity verification via the blockchain