Much like Eclipse, NetBeans is an open source platform-framework and an IDE (Integrated Development Environment) for developing with Java and other technologies.
It is a free and open source software maintained by the NetBeans community and backed by Sun/Oracle Corporation. According to http://netbeans-org:
"The NetBeans IDE is written in Java and runs everywhere where a JVM is installed, including Windows, Mac OS, Linux, and Solaris… The NetBeans Platform allows applications to be developed from a set of modular software components called modules. Applications based on the NetBeans platform (including the NetBeans IDE) can be extended by third party developers."
The Maven module will either be pre-included ...