Unity-Build Report Tool U3652
Want to reduce your game version to under 50 MB? Want to see which resources are taking up a lot of disk space?
This tool provides a good front end for Unity version information. It shows the resources that came with the build and how much storage each resource takes up.
Resource Usage/Dependencies: See which resource is using which resource to understand why it is included in that release.
List of unused resources: Maybe you have files that you no longer use? Check out the unused resources list to see which resources are not included in your build!
Save to XML: Save the version report to an XML file! Store multiple versions of reports for reference or send them to team members.
Project Settings: See which version settings were used by the project when it was built. This feature is ideal for continuous integration systems when viewing automated versions of settings.
DLL list: See exactly which Mono DLLs are included in your build and how much space they take up.
Also available for personal and mobile versions.