uninstaller is a GUI uninstaller for all setup programs that put an uninstall entry in the registry, e.g. InstallShield or the WISE installer. It's similar in function to "Add/Remove Programs" in Windows, except much simpler.
An actual Add/Remove Programs control panel applet (appwiz.cpl) was added to Wine 1.1.2, and the existing uninstaller was replaced with a stub to launch this control panel in Wine 1.1.3.
The uninstaller does not work with programs installed with an .msi file.