For years working with blobs in Azure storage, my go to favorite tool has been Clumsyleaf’s CloudXplorer.

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They’ve actually done an amazing job keeping the app updated as it supports:

Azure Blobs Office 365 Sharepoint Box Oracle Cloud Storage Rackspace Cloud Files Amazon Cloud Drive Google Drive Microsoft OneDrive etc

It’s my favorite because of the drag and drop capability. Some of the utilities out there are more FTP like, but this one works like Windows Explorer.