As for Windows NT, with the following exceptions:
Contains bugs in QDesktopWidget, QWindowsStyle and QFileDialog which cause most applications to crash on Windows 95. Before compiling Qt, you should apply these patches to the Qt sources. If the install program crashes, you have an old version of it: please download the Windows package again.
Since Windows 95 does not implement much Unicode, Qt's Unicode support on Windows 95 is lacking. Note that Qt attempts to hide these differences - application programs can see that the fonts available are rather incomplete, but there is generally no need for programs to care. With other toolkits such as MFC, you often need to recompile. With Qt, your programs detect and use the capabilities of the Windows version they run on, that's all.
Copyright 2008, Trolltech ASA