Mono

Mono is an open-source cross-platform implementation of Microsoft's .NET framework that allows developers to build, run, and deploy .NET applications across Linux, Windows, macOS, and other operating systems. It provides a complete runtime environment, development tools, libraries, and language support for creating portable desktop, web, cloud, and mobile applications.

• Provides a cross-platform runtime environment for .NET applications.
• Supports C#, F#, Visual Basic, and multiple .NET programming languages.
• Includes JIT and AOT compilation for improved application performance.
• Compatible with Linux, Windows, macOS, Android, and iOS platforms.
• Offers extensive support for .NET Framework libraries and APIs.
• Supports ASP.NET web application hosting and server-side development.
• Includes tools for debugging, profiling, testing, and application development.
• Enables development of desktop, web, cloud, and mobile applications.
• Supports integration with databases, web services, and third-party APIs.
• Designed to be lightweight, portable, scalable, and open-source.

Mono Usage:

$ sudo su
$ mono --version
  

Disclaimer: Mono is an open-source implementation of the Microsoft .NET framework designed for cross-platform application development and execution. It is widely used for building and running .NET applications on Linux, macOS, Windows, cloud environments, embedded systems, and mobile platforms.