There are 5 repositories under netbeans-plugin topic.
Free mind map editor with plug-ins for both NetBeans and Intellij
Zen Coding plugin for NetBeans
NetBeans IDE plugin supporting programming with Spring Boot
Several external (e.g. Eclipse, Google, Spring, ...) code formatters integration for NetBeans
This is a NetBeans plugin which adds a code overview/outline for the current editor.
Rainbow Parenthesis / Brackets / Braces for NetBeans
Netbeans Support for Python
Show colors in an editor's sidebar
SonarLint integration for Apache Netbeans
NetBeans module that provides JaCoCo code coverage for Ant based Java SE, Java EE and NetBeans Module projects (JDK5,6,7,8 compatible).
NetBeans Plugin which adds a toolbar for the common GIT actions
A REST client for NetBeans
NetBeans plugin which adds all files named like README.* to the project view.
It shows the current project group, project name, path of the current file/node/editor and IDE version in the titlebar of NetBeans.
Close Left & Close Right plugin for Netbeans IDE
Java Decompiler for Apache Netbeans.
NetBeans plugin which adds a toolbar with texteditor operations for sorting
Shows the current Git branch in the statusbar of NetBeans IDE
NetBeans plugins for ANTLR 4 enabling to integrate ANTLR grammar files in standard NetBeans projects (ant-based or Maven-based).
This Plugin for NetBeans IDE adds drop down buttons with convenient actions to the IDE and Editor Window toolbar
NetBeans plugin which adds the "copy the fully qualified name" feature
NetBeans plugin providing (code-)completion for CMake files.
NetBeans Plugin to make any folder a project
Additional java hints for NetBeans IDE http://plugins.netbeans.org/plugin/47589/additional-hints
Payara NetBeans plugin allows configuring and using the Payara Server & Payara Micro, for deploying and managing applications from the NetBeans IDE.