Faith is a cross-platform graphical application toolkit written in C++. It runs natively on Linux/Unix (Xlib), and on Windows (Win32). It is comparable to Qt and Gtk+. It is released under the LGPL, so thus is Free Software.
Faith has an API oddly similar to Qt's. However, it remains completely under the LGPL since we didn't write it "tainted" by Qt.
Faith is not "complete," so while it's useful (and inexpensive) as a teaching tool, or just for writing simple applications, it's not currently recommended for complete and truly polished applications; Qt is clearly the superior choice for that. We don't consider ourselves competition for Qt.
Faith supplies many widgets: LineEdit, PushButton, MenuBar, ToolBar, ScrollBar, Slider. Faith also supplies several other classes.