I'm currently backing up/migrating Amazon S3 and SimpleDB data from AWS to my on premise systems using sdbShell and s3cmd. Works great.
Now we're putting an app up on Microsoft Azure and I want to extend my reach to those. Are there any utilities like this for Azure? Ideally they'd work from my existing UNIX host but I could be talked out of that, but they need to be command line and not GUI doodads, I run these nightly and tied to some system automation.
This project might fit your bill. And, it might be cross-platform too, since it's browser-based.