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.

PingCastle - Because the Active Directory security lies in the process and not in expensive tools, our solution is simple: download PingCastle and apply its methodology.

SailPoint IdentityIQ - IdentityIQ is an IAM solution that unifies identity management processes across cloud, mobile and on-premises environments.

Sysmalogic AD Report Builder - Active Directory Report and Scheduler Quickly find AD info to match your clipboard content

Devise - Flexible authentication solution for Rails with Warden.

ManageEngine ADAudit - ManageEngine ADAudit is a real-time windows active directory auditing tool.