UGALY (Universal Groups Acting LocallY) is a GAP package that provides methods to create, analyse and find local actions of generalised universal groups acting on locally finite regular trees, following Burger-Mozes and Tornier.
UGALY was developed by Khalil Hannouch and Stephan Tornier within the Zero-Dimensional Symmetry Research Group in the School of Mathematical and Physical Sciences at The University of Newcastle, Australia.
Contributions were later made by Tasman Fell within the same research group.
UGALY is maintained by Stephan Tornier.
UGALY is free software; you can redistribute and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.