Compare Auth0 vs. Authelia

Auth0 takes a modern approach to Identity and enables organizations to provide secure access to any application, for any user. Auth0 is highly customizable, and simple yet flexible. Safeguarding billions of login transactions each month, Auth0 delivers convenience, privacy, and security so customers can focus on innovation. With Auth0, you can rapidly integrate authentication and authorization for web, mobile, and legacy applications, with new Fine Grained Authorization (FGA) that goes beyond role-based access control.

Authelia serves as an open-source server and portal for authentication and authorization, effectively managing identity and access in information security by providing multi-factor authentication and single sign-on capabilities through a web portal for various applications. This tool is designed to work seamlessly with popular reverse proxies. Notably, it boasts a compact container size of under 20 megabytes and typically consumes less than 30 megabytes of memory, making it one of the most lightweight options available. Developed using Go and React, it executes authorization policies and backend tasks in just milliseconds, with login portal loading times averaging around 100 milliseconds, positioning it among the fastest solutions on the market. Despite the high energy consumption of processors under load, Authelia's idle power usage is so minimal that it is nearly unmeasurable, while its active usage in a small business setting remains below 1%, excluding the process of password hashing, providing peace of mind. The design of Authelia places a strong emphasis on security, ensuring that user data is well protected throughout its operations. This commitment to security is an integral aspect of the overall functionality and reliability of the system.