What is a nbm file and how do I open a nbm file?

A NetBeans module file is a plug-in application developed for expanding the utility as well as the set of functionalities integrated into the NetBeans software. These NetBeans module files are implemented with source code compilation specifications proprietary to Oracle, and custom encoding standards are also integrated into these NetBeans module files so it can be stored in the NBM file format. Affixed with the .nbm extension, the content of a NetBeans module file may include XML and metadata details implemented with compression specifications also proprietary to Oracle. The NetBeans software is classified as IDK (Integrated Development Environment) software, and these NetBeans module file is integrated with support for pack200 compression, and these compression specifications are implemented into JAR files that may be included in the NetBeans module file. The data stored in these NetBeans module files may be used for the development of custom plug-in software for the NetBeans application, and these plug-in programs can also be implemented with PHP and C++ among other programming languages supported by the NetBeans software.