Version 3, last updated by Thomas Schweitzer at April 13, 2008 04:09 UTC
UniversalIndentGUI is a cross platform compatible GUI for several code formatters, beautifiers and indenters, e.g. GreatCode, AStyle (Artistic Style), GNU Indent, BCPP and others. Its main feature is a live preview to directly see how the selected formatting options affect the source code.
Go here to its homepage.