I, being a company or individual, can:

The NetBeans source code is meant to be open source and freely available. You can distribute NetBeans for free or for sale. However your version needs to contain proper attribution to the authors (so your version still shows who wrote it). If you modify the NetBeans source code files, those modifications need to be made available back to NetBeans Community with proper notice of the changes as called for by the SPL (that's what we get out of it). Files which you write entirely by yourself and add to the IDE do not need to be made available back to the NetBeans Community.

Source: NetBeans User FAQ

Parent Category: Other API Tips