Amazon S3 vs. Azure Data Storage

There are so many similarities between the Amazon S3 and Azure Data Storage REST APIs, I believe that soon somebody will write a cross-cloud Data Storage Library. If anybody knows about such library, please let me know! The table below shows only a few similarities between S3 and Azure Data Storage APIs.

Amazon S3	Windows Azure Data Storage
Bucket	Container
CREATE Put http://destinationBucket.s3.amazonaws.com	CREATE Put http://myaccount.blob.core.windows.net/mycontainer
List objects GET http://destinationBucket.s3.amazonaws.com ?prefix=prefix;marker=marker;max-keys=max-keys;delimiter=delimiter	List blobs GET http://myaccount.blob.core.windows.net/mycontainer?comp=list& prefix=prefix&delimiter=delimiter&marker=marker& maxresults=maxres
Delete Object DELETE: http://destinationBucket.s3.amazonaws.com	Delete Blob DELETE http://myaccount.blob.core.windows.net/ mycontainer
Object	Blob
PUT http://destinationBucket.s3.amazonaws.com/ destinationObject Content-Length: length Content-MD5: md5_digest Content-Type: type Content-Disposition: object_information Content-Encoding: encoding Cache-Control: caching Expires: expiration	PUT http://myaccount.blob.core.windows.net/mycontainer/ myblob Content-Length Content-Type Content-Encoding Content-Language Content-MD5 x-ms-meta-name:value
GET http://destinationBucket.s3.amazonaws.com/ destinationObject Range If-Modified-Since If-Unmodified-Since If-Match If-None-Match	GET GET http://myaccount.blob.core.windows.net/mycontainer/ myblob Range
Get Object Properties HEAD http://destinationBucket.s3.amazonaws.com / destinationObject	Get Blob Properties HEAD http://myaccount.blob.core.windows.net/mycontainer/ myblob
Delete object DELETE http://destinationBucket.s3.amazonaws.com/ destinationObject	Delete blob DELETE http://myaccount.blob.core.windows.net/mycontainer/ myblob