oauth.io
Auth0
Spring Security
Firebase Authentication
OmniAuth
JSON Web Token
Devise
OAuth2
Getwebstack
MarsX
Getwebstack is for development teams that implement a lot of different projects. It can help outsourcing companies, accelerators, freelancers, or dev studios to develop fast. It is also for individuals that want to test a technology or an idea for a startup with a quick setup and deployment. Getwebstack provides a complete solution that covers all the technical aspects of a web app. It has an affordable monthly subscription instead of an expensive one-time payment.
GetwebstackAuth0 - Auth0 is a program for people to get authentication and authorization services for their own business use.
MarsX - MarsX leverages the power of AI to help users build mobile and web applications using code and no-code technology. MarsX is highly accessible, allowing even non-developers and those with zero building and coding experience to create their own mobile
Spring Security - The Spring portfolio has many projects, including Spring Framework, Spring IO Platform, Spring Cloud, Spring Boot, Spring Data, Spring Security...
Firebase Authentication - Application and Data, Application Utilities, and User Management and Authentication
OmniAuth - OmniAuth is a flexible authentication system utilizing Rack middleware.
JSON Web Token - JSON Web Tokens are an open, industry standard RFC 7519 method for representing claims securely between two parties.