One of the strongest contenders is Prove. Prove is a digital identity verification and authentication service used by more than 1,000 companies around the world. Its services include Prove Auth, which handles passwordless and OTP-less authentication for mobile apps, websites and omnichannel experiences, and is good for onboarding, commerce enablement, compliance and fraud prevention. Prove touts real-time management and bank-grade security, so it's a good option for many use cases.
Another good option is SecureAuth. SecureAuth offers a passwordless continuous authentication service for workforce and customer identities. It's got features like continuous authentication, invisible MFA and adaptive authentication. The service is designed to thwart credential-level attacks, improve security posture and improve user experience, so it's good for compliance and security-sensitive situations.
For a more all-purpose service, HYPR is a good option with strong passwordless authentication and automated identity verification. HYPR can spot and block identity risk problems for workforce and customer identities. It offers continuous risk and policy orchestration and supports high assurance levels for compliance, so it's good for security, IAM, HR, finance and risk management teams.