Guardian vs Passport: What are the differences?
Developers describe Guardian as "Remove the OAuth dance with one request". Avoid dealing with OAuth logic in your code, and spend more time creating your product. Guardian reduces the OAuth footprint in your code to a single request. Built with modularity in mind, Guardian leverages plugins to handle OAuth flows, should you encounter a flow that Guardian doesn't handle, create a small flow plugin to do so and carry on. Guardian comes with 5 pre-made plugins that cover 99% of OAuth services. 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.
Guardian and Passport belong to "User Management and Authentication" category of the tech stack.
Guardian and Passport are both open source tools. Passport with 15.9K GitHub stars and 936 forks on GitHub appears to be more popular than Guardian with 628 GitHub stars and 42 GitHub forks.