S3 Mockup is an Amazon S3 emulator we develop for one of our projects. It can be easy embedded and used in your test framework or running as an independent service. Using this emulator you can easy setup development and QA environment.
The goal of this project is to create a functioning web server which is indistinguishable from Microsoft's IIS product at a topical level. This server can be run standalone, through inetd, or as a module of the "honeyd" project.