Obsolete: Both site and source code links are long dead. App dates indicate it was developed for a decommissioned version of the API.
Barely an app, Stack Overflow Badges shows you all the badges available on Stack Overflow, and lets you see which ones you, or anyone else, has got.
- Dead link:
Public on Bitbucket: https://bitbucket.org/pauldwaite/stackoverflowbadges