With Mono, you can build and run applications based on .NET on systems other than Windows, including macOS, Linux, or Unix-based platforms. As a community project, Mono supports CLI as well as multiple programming languages like C# and VB.NET, and it provides you with a reliable and flexible runtime environment. It also includes robust class libraries, JIT compilation, and performance optimization features so that you can build out software for servers, desktops, or mobile devices without the need to have paid licenses.
You should also download Mono if you want to get access to a fully transparent solution that is often updated with new functionalities and other improvements. It's a great environment for cross-platform development, and programmers with different experience levels can benefit from having it in their toolset.
Mono gives you access to a mature ecosystem that you can use for game development with engines like Unity or create enterprise-level solutions. It guarantees that your code will be compiled to run consistently and reliably on various platforms, and you can also create custom or partial builds that match your use case and needs.
Why should I download Mono?
Choosing Mono is a no-brainer if you want to use .NET languages like C# on applications that can run on multiple platforms, versus being constrained only to the Windows operating system. With this complete runtime environment, you get full support of all .NET APIs, a CLR (Common Language Runtime) virtual machine, Just-In-Time (JIT) and Ahead-Of-Time (AOT) compilation, as well as SGen garbage collector for mobile and desktop solutions alike that improves performance when performing high-load tasks. All of that can be particularly useful if you have to build with resource limits in mind and need to optimize memory and execution time.
When you download Mono, you also get a C# compiler that works with .NET standards and helps you make sure that your apps will be compatible with .NET Core and newer .NET 6/7 runtimes so that you can share the same database between Windows, Linux, macOS, and mobile platforms like Android and iOS. There are also prebuilt functionalities that you can use for tasks such as networking, file management, or even graphical UI creation so that you can save time and focus on more important things.
If you're working on integrated development environments (IDE) like Visual Studio Code and JetBrains Rider, you can also use them with Mono and save time on things like syntax highlighting and code completion and also use robust debugging tools. There's also a dedicated MonoDevelop IDE tailored for C# and .NET framework if you'd like to give it a go.
Mono, by default, gives you transparent access to its source code so that you can verify it's completely secure but also tailor the framework to your specific needs and project requirements. Because the tool is free, it's also a great option for startups, educational institutions, or even personal users who are experimenting on their own. You can use Mono with the tools you already use and integrate it smoothly into your workflow. This solution gives you a lot of flexibility and supports everything from small personal projects to big commercial applications.
Is Mono free?
Yes, Mono was created as an open-source project that is completely free for both personal and commercial usage. The platform is distributed under the GNU General Public License (GPL) so that you can download, modify, and even distribute it without any cost. Thanks to this model, it's a versatile solution that you can use for different purposes and not worry about licensing.
What operating systems are compatible with Mono?
One of the benefits of using Mono is that it supports different platforms, such as Windows (Windows 7, 8, 10, 11), macOS (Intel and Apple Silicon machines), Linux (Debian, Ubuntu, Fedora, CentOS, Arch, Alpine, and more), and systems based on Unix.
This differentiates Mono from classic .NET Framework tools from Microsoft, which are restricted to Windows only. Not only can you use Mono on all those different operating systems, but you are also able to create software for them or use Xamarin to develop mobile apps for iOS and Android.
What are the alternatives to Mono?
.NET Framework from Microsoft is the basis on which Mono was created, and its original implementation is limited to Windows operating systems. With its support of Windows Forms, WPF, and other UI technologies, you can develop native apps that are optimized for this system. While the tool is free, some enterprise-level or more advanced extensions could be paid for, and you need to keep in mind this solution doesn't extend to macOS, Linux, or any other platform.
For those working with Java, OpenJDK is an open-source, free solution you can use to develop cross-platform software based on this technology. You can download and use OpenJDK on Windows, macOS, Linux, and BSD systems, and it includes Java Virtual Machine (HotSpot), Java libraries, and development tools (javac, javadoc, jshell). It's a great option for developing various programs that can include, but are not limited to, enterprise software, games, cloud platforms, or mobile apps. OpenJDK also supports JVM-based languages such as Kotlin, Scala, or Groovy.
Java Runtime Environment (JRE), unlike OpenJDK, is a version of Java dedicated only to running applications and doesn't support compiling them. A lot of enterprise-level solutions use this platform, and it supports various operating systems like Linux, Windows, and macOS. With JRE, you also get JVM and core libraries, but it lacks any development tools. Keep in mind that it will be a good choice only for very specific use cases, like having a consistent and lightweight Java runtime environment, but it's not a full-scale solution appropriate for all your development needs. It's a free tool that is maintained by its open-source community and should be sufficient in situations where having a full-blown environment would simply be overkill.
