App: SizeFinder
Developer: Pavel Epifanov
Genres: Dienst­programme, Produktivität

The main purpose of this app is to show folder sizes in a Finder-like interface. It calculates the size of a folder (own size), and the size of a folder including all of its subfolders (total size).
Additionally, you can use wildcards to include / exclude files. For instance, search for all of your *.mp3 files, or show the size of everything except *.zip.
You can choose to consider the exact file size or the place on disk it uses.

Release notes:
Improved compatibility with Mac OS 10.7.
Introduced sandboxing.