MonoDevelop (also known as Xamarin Studio) is an open source integrated development environment for Linux, macOS,MonoDevelop on Mac OS X. Developed by Novell
License: Open Source
MonoDevelop is a powerful, cross-platform IDE primarily focused on .NET development, offering extensive features and language support, making it suitable for professional developers. In contrast, BlueJ is a lightweight, educational IDE specifically designed for Java, catering to beginners and academic environments, but lacks the advanced capabilities needed for larger projects.