Mac OS X Softwares to Support for Let's Encrypt

Mongoose is a highly portable embedded web server library designed for IoT, embedded devices, and resource-constrained environments. It provides a robust and flexible framework for building web interfaces and network services directly into applications, supporting protocols like HTTP, HTTPS, WebSocket, MQTT, and more.

Hiawatha is a secure and flexible open-source web server designed for Unix-based systems. It stands out for its strong focus on security features and lightweight architecture, making it suitable for various web hosting needs.

Abyss Webserver is a versatile and lightweight web server solution designed for Windows, macOS, and Linux. It offers robust performance and a user-friendly interface, making it suitable for both beginners and experienced users. Supporting key web technologies like CGI, HTTPS, and Let's Encrypt, it provides a secure and flexible platform for hosting websites and web applications.

Cherokee is a powerful, open-source web server known for its speed, configurability, and lightness. It's designed for modern web applications, offering high performance and a user-friendly configuration interface.

lighttpd is a high-performance open-source web server designed for speed and efficiency in demanding environments. Known for its low memory footprint and modular architecture, it's a popular choice for applications requiring rapid response times and resource optimization.

Apache HTTP Server, widely known as Apache, is a robust, open-source web server software that has been the backbone of the internet for decades. It is highly configurable and extensible through its modular architecture, supporting a vast array of features for hosting websites and web applications.