Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.

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

Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.

Keycloak - Open Source Identity and Access Management for modern Applications and Services.

Strikethru - Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.

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.