AWS JavaScript S3 Explorer is a JavaScript application that uses AWS's JavaScript SDK and S3 APIs to make the contents of an S3 bucket easy to browse via a web browser.
The project LICENSE file is available in the repo. Does that help?
I notice that it's not available in the v2-alpha branch, for some reason. That's probably where you were looking. Will add it there too. Thanks for reporting this.
Is there any open source license available for this repo?