When comparing NetBeans IDE vs Suplemon, the Slant community recommends NetBeans IDE for most people. In the question“What are the best programming text editors?” NetBeans IDE is ranked 30th while Suplemon is ranked 51st. The most important reason people chose NetBeans IDE is:
NetBeans is a free, GPL-licensed IDE. It can run on any computer with a Java virtual machine. If a computer has a Java virtual machine (JVM), Netbeans can run on it. Netbeans can, therefore, run on a variety of operating systems such as Windows, *nix, and Mac OS.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Cross-platform
NetBeans is a free, GPL-licensed IDE. It can run on any computer with a Java virtual machine. If a computer has a Java virtual machine (JVM), Netbeans can run on it. Netbeans can, therefore, run on a variety of operating systems such as Windows, *nix, and Mac OS.
Pro Good refactoring
Pro Easy to learn
Very easy to learn, unlike e.g. Eclipse (which is probably the most flexible).
Pro Good support for integrated Database e Servers (E.g. Tomcat)
Pro Multiple revision control system integration
Pro Customizable theme
Pro Take less memory
Pro Native multi cursor editing on the command line
Multiple cursors & column selection allow versatile ways of editing.
Pro Low learning curve
Does not drown you in keyboard shortcuts or non-intuitive use-concepts as you start using it, but high-level functionality can still be easily accessed when the need for it arises.
Pro Mouse support
Scroll wheel works automatically. With mouse mode (F8) the cursor can be moved with a left-click to a desired position, and new cursors can be added with right clicks.
Pro No required dependencies
Pro Shows linting messages for Python code (requires flake8)
Cons
Con Little support for UML
Unless you load extensions.
Con Slow
The Netbeans IDE is known to take a large memory as compared to other lighter IDE's available on the market. The slowdown can decrease productivity and frustrate programmers.

Con No region selection
Some selection features that are taken for granted in other editors are missing here. As they say in their documentation, if you want to copy and paste part of a line, you need to use the mouse to select it and copy with Ctrl + Shift + C.
