For those creating netbeans modules using Maven (most probably with the maven-nbm-plugin) the biggest problem always was to populate the local repository with Netbeans API modules. Not anymore, thanks to Charlie Hunt (Nb Evangelist) who provided the webspace, I managed to setup a remote repository for these artifacts. Here it is:
http://208.44.201.216:18080/maven/. Not only does it host the artifacts, but also declares dependencies in the poms (you get transitivity in dependencies) and for some APIs it even contains javadoc artifacts.

With the IDE integration, you get the docs at your fingertips then.

Adding it to your pom is simple.