GNU General Public License, version 2 or later
Foxifier is free and open software, just like PopTray, which inspired it. You may use, share and modify it under the terms of the GNU GPL, version 2 or (at your option) any later version.
✦ You may use Foxifier freely, at home and at work.
✦ You may pass it on, modified or not, as long as the source code stays available under the same license.
✦ Foxifier comes without any warranty, as described in the license.
Full text: gnu.org/licenses/old-licenses/gpl-2.0.html