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 2.0 ("EPL"). 
A copy of the EPL is available at http://www.eclipse.org/legal/epl-2.0.
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-2.0         (local copy: ./epl-2.0.html)

Each subdirectory contains the proper license documents:
    cocoa-macosx-aarch64/about.html
    cocoa-macosx-x86_64/about.html
    gtk-linux-aarch64/about.html
    gtk-linux-x86_64/about.html
    win32-win32-x86_64/about.html