Better Auth

A Better Auth plugin for integrating Polar payment and checkout functionality into an existing Better Auth application. It helps applications accept payments through Polar.

An open-source authentication library for JavaScript and TypeScript web applications maintained by the Auth.js project. It implements OAuth/OpenID Connect provider sign-in, email and credential-based authentication, session management (JWT or database-backed sessions), and provides adapters to persist accounts and sessions. Auth.js runs on Node.js and is commonly used with Next.js and other Node web frameworks; source code is published on GitHub and the project is distributed under the MIT license.

AuthBridge is an Indian background-verification and identity-services company that provides employee background screening, identity verification, KYC and compliance solutions for enterprises and hiring organisations.

authentik is an open-source, self-hosted identity provider for modern single sign-on and identity management. It supports SAML, OAuth2/OIDC, LDAP, and RADIUS, and can be deployed with Docker Compose for small or test setups, Kubernetes via a Helm chart for larger clusters, or official AWS CloudFormation templates and a DigitalOcean Marketplace app. The project also offers an enterprise edition for large-scale identity management.

Axios is a promise-based HTTP client for browser and Node.js applications. It creates API instances and sends requests such as authentication, session, logout, and project operations. Its interceptor system can modify request, response, and error handling, and it includes TypeScript support.