A modern cross-platform reimplementation of the Command & Conquer: Red Alert engine using ICSharpCode.SharpZipLib, OpenTK, SDL2#, SharpFont and Mono.NAT.
Second Life uses Mono as an engine that accelerates the execution of user provided scripts by translating LSL scripts into ECMA CIL bytecodes and in turn letting Mono turn that into x86 machine code.
Banshee is a music organizational and playback tool.
F-Spot is a photo management application for the GNOME desktop.
GNOME Do is a crazy-delicious launcher tool that makes performing common tasks on your computer simple and efficient.
MonoDevelop is a free GNOME IDE primarily designed for C# and other .NET languages.
MonoUML is a CASE tool designed for allowing all UNIX/Linux developers faster computer systems design using a friendly GUI application.
OpenVPN-Admin is a GUI for OpenVPN that runs under Linux and Windows.
Pinta is a paint program designed for simplicity and ease of use. It is modeled after Paint.Net.
Tomboy is a desktop note-taking application for Linux and Unix. Simple and easy to use, but with potential to help you organize the ideas and information you deal with every day.
Smuxi is a flexible open-source cross-platform IRC client for the GNOME desktop.
Open Source Applications
NClass is a UML modeling application written in C#.
Paint.Net hasn't been fully ported to Mono yet (due to p/invokes), but we can still see it using the new 2.0 controls.
SharpChess is a free computer application that enables you to play chess against the computer.
Reversi is a popular game that is fun, requires just a few basic elements and has simple rules.
MonoCalendar is an application designed for easy management of calendars.
NUnit is a unit testing framework that is open source written in C#.
MoMA is a tool that helps you identify issues you may have when porting your .Net application to Mono.
Codice Plastic SCM - Commercial, Cross-Platform Source Control Management system for Windows (not pictured), Linux, and macOS.
Likewise Administrative Console (LAC) - commercial, cross-platform graphical administration console for Windows (not pictured), Linux, and macOS.
|Nu Tech Software Solutions
A virtual keypad and graphical status for Ademco Honeywell alarms.
Client-server socket support, write custom modules with supplied API and examples to perform your own tasks upon alarm events, customize your own buttons and images and much more.
|Point of Sale solution from Microinvest
Microinvest Neo is a commercial cross-platform Point of Sale developed with Mono and Gtk Sharp
mojoPortal is an open source content management system and web site framework portal for .NET on Windows or Mono on Linux and macOS.
An innovative open source blogging platform developed with ASP.NET 2.0.
SplendidCRM was built on the Microsoft technology stack using Visual Studio 2005 Professional, but also runs on Mono.
Graffiti CMS allows you to quickly publish and maintain dynamic content Web sites with little or no knowledge of Web programming.
Other Mono Applications
Game Development Tool implemented using Mono.
Mono can be run on embedded devices like the Nokia 770. A video of the Nokia 770 running Gtk# is available here.
Eclipse is an IDE written in Java. It can run on Mono using IKVM, the Java VM for .Net.
|Eclipse on IKVM|
|SimplePM (non-English website)
SimplePM_Server solutions checking subsystem, a part of SimplePM programming contests management system, was written in C# and fully supports Mono. SimplePM is an open source software licensed under Apache License 2.0