Keycloak - Open Source Identity and Access Management for modern Applications and Services.
Auth0 - Auth0 is a program for people to get authentication and authorization services for their own business use.
Shibboleth - standards based, open source software for web single sign-on across or within organizational...
Okta - Enterprise-grade identity management for all your apps, users & devices
DbProtect - Trustwave DbProtect is a highly scalable database security platform that helps organizations secure their relational databases and big data stores, both on premises and in the cloud.
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.