OneLogin - On-demand SSO, directory integration, user provisioning and more

Okta - Enterprise-grade identity management for all your apps, users & devices

Auth0 - Auth0 is a program for people to get authentication and authorization services for their own business use.

PortalGuard - A dedicated web-based identity management portal that combines strong authentication with flexible, high-performance integration.

LoginRadius - Loginradius is a cloud-based customer identity and access management platform. LoginRadius empowers businesses to deliver a delightful customer experience without compromising security.

Atlassian Crowd - Crowd is a single sign-on and user identity solution.