Open-source alternatives to OAuth2

:couple: Multi-user accounts for Django projects

Simple yet powerful authorization / authentication client library for Python web applications.

Tools to make Plug, and Phoenix authentication simple and flexible.

Django Two-Factor Authentication

Userena is a Django application that supplies your Django project with full account management. It's a fully customizable application that takes care of the signup, activation, messaging and more. It's BSD licensed, which means you can use it commercially for free!

Apex

Plug-n-Play login system for iOS written in Swift

CognitoR

🌸 Powerful Codable API requests builder and manager for iOS.

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Thin wrapper around NSURLSession in swift. Simplifies HTTP requests.

Pure Swift iOS download framework with background downloads, relaunch recovery, resumable transfers, and task management.

Robust, modular, and extendable user authentication system

Live demo:

Swift HTTP for Humans

🌏 A zero-dependency networking solution for building modern and secure iOS, watchOS, macOS and tvOS applications.

Awesome Django authorization, without the database

Simple authentification mechanism for single 'shiny' applications.

📱📲 A wrapper for the MultipeerConnectivity framework for automatic offline data transmission between devices

django-guardian is a Django object permission library that enables the assignment of fine-grained access rights to individual database records. This system provides object-level access control, allowing users or groups to be granted permissions for specific model instances rather than applying a single global rule to an entire data model. The library includes a permission manager for the Django administrative interface, which provides a visual dashboard to assign and audit these instance-specific security rules. It also features an anonymous access controller to define and verify permissions

OAuth2 goodies for the Djangonauts!

👤Minimalist Google OAuth Authentication for Elixir Apps. Tested, Documented & Maintained. Setup in 5 mins. 🚀

Authlib is a comprehensive Python library for building and integrating OAuth 1.0, OAuth 2.0, and OpenID Connect clients and servers. It provides a unified set of tools to manage authentication and authorization flows, allowing applications to either act as a client connecting to external identity providers or as a provider issuing tokens and managing user identities. The project distinguishes itself through a full implementation of the JOSE standards, offering a suite of cryptographic tools for generating, signing, encrypting, and validating JSON Web Tokens, Signatures, Encryption, and Keys.