NetBeans partners are companies that provide, or help provide, a plugin or service for NetBeans IDE to support popular features, frameworks, technologies, and platforms. NetBeans partners provide a value add for NetBeans developers with a business model of their choosing, which could be for a fee or for free.
The latest NetBeans partner is... drum roll... Everlaw! Yes, that's right, that's the company that, as announced yesterday in this blog and elsewhere, has open sourced its brilliant TypeScript plugin for NetBeans IDE, thus adding truly great value to NetBeans IDE.
The above is taken from the NetBeans Partners page, where all NetBeans partners are listed and promoted.