Auth0 vs Guardian: What are the differences?
Auth0: Token-based Single Sign On for your Apps and APIs with social, databases and enterprise identities. A set of unified APIs and tools that instantly enables Single Sign On and user management to all your applications; 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.
Auth0 and Guardian can be categorized as "User Management and Authentication" tools.
Guardian is an open source tool with 628 GitHub stars and 42 GitHub forks. Here's a link to Guardian's open source repository on GitHub.
What is Auth0?
What is Guardian?
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I use Auth0 because we have multiple projects which were using their own db to authenticate users. After the introduction of GDPR (https://eugdpr.org/) we decided to provide SSO functionality to users by maintaining the data at centralized place and for that we have multiple options but Auth0 was the best one in every aspect. So we decided to go with Auth0 and now almost after one year we have successfully exported all of our users in Auth0. Auth0 also has great functionality of configuring social providers like facebook, twitter etc and enterprise connections like Active Directory which is very beneficial. Also it maintains all the logs which is very useful. Overall I would say Auth0 is great in every aspect. It contains all the functionality that I required and Auth0 support team is great and very cooperative. They always respond within a day which is a great thing. Last thing Auth0 community is also another place where we can share our knowledge. It still requires some efforts to become a competitor of big communities like stack overflow and github but the way Auth0 is working, I hope it won't take very long to reach at that level. So in last I wish Auth0 best of luck.
I use Auth0 because it's is a great place to ask questions and get support, specifically Auth0 Community forum is awesome. Also, it is very easy to implement, recently I have used for one of my serverless application. Moreover, I really liked the Auth0 docs where you can find solutions to most of the problems and great documentation on easy setup guide for any newbies.
Auth0 seems like the most viable way to have full-fledged user management in AWS without too much hassle. Aside of being paid, it offers many advantages, such as social network logins or handy administration interface.
Authentication as a service. Instead of rolling our own user authentication flow for yet another time, it's better to leave the security concern to a service specialized in this field.