Project Website incl source code: http://wiki.eclipse.org/SWT

License

The Eclipse Foundation makes available all content in this plug-in ("Content"). Unless otherwise indicated below, the Content is provided to you under the terms and conditions of the Eclipse Public License Version 1.0 ("EPL"). A copy of the EPL is available at http://www.eclipse.org/legal/epl-v10.html. For purposes of the EPL, "Program" will mean the Content.

http://www.eclipse.org/legal/epl/notice.html (local copy: ./notice.html)
http://www.eclipse.org/legal/epl-v10.html    (local copy: ./epl-v10.html)

Each subdirectory contains the proper license documents:
    cocoa-macosx/about.html
    cocoa-macosx-x86_64/about.html
    gtk-linux-x86/about.html
    gtk-linux-x86_64/about.html
    win32-win32-x86/about.html
    win32-win32-x86_64/about.html