What is the best free software "uninstaller" for OS X?
Your Hand (free)
Drag to the trash.
Delete applications using drag and drop. Protects system applications.
Smart Delete finds additional files when dropping a program to the trash.
You can also delete widgets and plug-ins using this tool.
It does a good job of finding dependencies in odd places without having to do any contact file system monitoring. Also handles widgets, preference pane add-ons and Safari plugins.