In reply to Laura.

License or no license included, their software is still protected by copyright.

The GPL doesn't apply since they are not modifying any WP source code. Copying files for use in a dev environment is not considered "integrating". They are simply including a verbatim copy of WP. That is totally "kosher" under the GPL.

WordPress is included as a zip file which contains how WP is licensed. At least in the mac version, if you choose "About Local" from the app's menu, they rattle off every piece of software in use and its license as well.