About Springy
A simple to use, yet powerful archiving and compression utility for Mac OS X. Springy integrates seamlessly with the Finder and includes some very useful features. All archiving tasks can be done via Drag and Drop, system Services Menu or through Springy’s Finder contextual menu.

Springy features at a glance:
- Open and browse the contents of an archive or disk image without extracting any file from it.
- Quickly extract all files or only files of choice from an archive or disk image.
- Quickly extract the whole archive or disk image by double-clicking its file in a Finder.
- Modify the contents of an existing archive or disk image: add, overwrite, delete and rename files in an archive or disk image.
- Full Drag & Drop support for archiving and extracting from and into Finder.
- Many more features.

Read more: http://www.apple.com/downloads/macosx/system_disk_utilities/springy.html