AuthKit, developed by WorkOS and Radix, offers a highly customizable login solution that supports both light and dark modes, ensuring seamless integration with any app design. It features advanced security measures, including multi-factor authentication and role-based access control, and is designed for scalability and enterprise readiness. Users have praised its ease of integration and the control it offers over UI elements.

Radar is a new feature enhancing AuthKit by providing real-time protection against bots, fraud, and abuse in SaaS applications. It leverages device fingerprinting and analyzes authentication patterns to identify and block suspicious activities, offering built-in preventions like bot detection and brute force protection. Developers can also set custom rules to tailor security measures to their specific needs.