How is the Eclipse Web Tools Platform licensed?
The Eclipse Web Tools Platform (WTP) consists of software produced by the Eclipse Project combined with third party software from other open source projects. The software produced by the Eclipse Project is made available under the Eclipse Public License. Third party components are made available under their own licenses. The detailed licensing information can be found in the Eclipse.org Software User Agreement (notice.html) file in the root directory of the SDK download. Licensing for third party components is described in about.html files in the respective subdirectories.