cx_Freeze is a set of utilities for freezing Python scripts into executables using many of the techniques found in Thomas Heller's py2exe, Gordon McMillan's Installer and the Freeze utility that ships with Python itself
I use cx_Freeze to distribute a Python application on both Windows and Macs. It works well, and it's the only freeze tool with Python 3 support. It can be hard to use correctly, though. Another review mentions problems with Python 3.4.0 - this was true until recently, but the latest release of cx_Freeze should have fixed it.