Guardian vs Keratin AuthN: What are the differences?
Guardian: 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; Keratin AuthN: Accounts and Auth Microservice in Go. AuthN manages a database of user accounts with sign-in credentials and related attributes. Your application frontend relies on AuthN for creating accounts, logging in, forgotten passwords, and session maintenance.
Guardian and Keratin AuthN can be categorized as "User Management and Authentication" tools.
Guardian and Keratin AuthN are both open source tools. Keratin AuthN with 775 GitHub stars and 45 forks on GitHub appears to be more popular than Guardian with 628 GitHub stars and 42 GitHub forks.