When comparing TextMate vs NetBeans IDE, the Slant community recommends TextMate for most people. In the question“What are the best programming text editors?” TextMate is ranked 15th while NetBeans IDE is ranked 21st. The most important reason people chose TextMate is:
TextMate has an extensive library of plugins which can be further extended to make it even more powerful.
Specs
Question Ranking
Pros
Pro Extensible
TextMate has an extensive library of plugins which can be further extended to make it even more powerful.
Pro Open source
Textmate is open source and hosted on GitHub.
Pro Lightweight footprint
It's lightweight footprint makes it extremely fast to load and use.
Pro Multi line select and editing
Pro Snippets
Pro OS X only (native)
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 Easy to learn
Very easy to learn, unlike e.g. Eclipse (which is probably the most flexible).
Pro Good refactoring
Pro Customizable theme
Pro Good support for integrated Database e Servers (E.g. Tomcat)
Pro Take less memory
Pro Multiple revision control system integration
Cons
Con OS X only
TextMate is for OSX only.
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 Little support for UML
Unless you load extensions.