The Two-Layered GUI Toolkit is a library of GUI helper classes which is designed in a way to simplify development of separate interchangeable front-ends. For every supported dialog box type, there is a settings class (independent from a GUI toolkit) whose options can be used by one of the implementations for a specific GUI toolkit (bindings for Gtk#, WPF, and WinForms are provided, but custom ones can be added). That is, the dialog definition can be prepared by the application's core component and passed to the front-end, which uses it to instantiate the dialog box using whatever GUI toolkit it likes.
Renaming a file works well when there is just one. But when you have a directory full of them, it gets tedious quickly. With nametrans, you can use search and replace on your list of files as you would on text in a document. And with regular expressions, you have even more power to transform file names (and whole file paths) systematically. With useful presets for common fixes like lowercasing or capitalization, you can keep your filenames nice and tidy, whether 10 or 10,000 of them, in one go.