LDAP vs Passport: What are the differences?
Developers describe LDAP as "An open source implementation of the Lightweight Directory Access Protocol". It is a free, open-source implementation of the Lightweight Directory Access Protocol. Lightweight Directory Access is an application protocol that is used to crosscheck information on the server end. On the other hand, Passport is detailed as "Simple, unobtrusive authentication for Node.js". 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.
LDAP and Passport can be categorized as "User Management and Authentication" tools.
Passport is an open source tool with 15.9K GitHub stars and 936 GitHub forks. Here's a link to Passport's open source repository on GitHub.