Auth0
A set of unified APIs and tools that instantly enables Single Sign On and user management to all your applications.
MongoDB
MongoDB stores data in JSON-like documents that can vary in structure, offering a dynamic, flexible schema. MongoDB was also designed for high availability and scalability, with built-in replication and auto-sharding.
Passport
It is authentication middleware for Node.js. Extremely flexible and modular, It can be unobtrusively dropped in to any Express-based web application. A comprehensive set of strategies support authentication using a username and password, Facebook, Twitter, and more.
Okta
Connect all your apps in days, not months, with instant access to thousands of pre-built integrations - even add apps to the network yourself. Integrations are easy to set up, constantly monitored, proactively repaired and handle authentication and provisioning.
Firebase
Firebase is a cloud service designed to power real-time, collaborative applications. Simply add the Firebase library to your application to gain access to a shared data structure; any changes you make to that data are automatically synchronized with the Firebase cloud and with other clients within milliseconds.
