Cyberduck announced a new version yesterday that gives the tool even more file management features, including support for Google Storage and file versioning in Amazon S3.Often appearing on lists of "must have" Mac software, the open source FTP, SFTP, and WebDAV client
New features include integration of Access Control List editing for Amazon S3 and Google Storage so that permissions can be granted to different users. Using Cyberduck alongside Google Storage, for example, one can limit access to files based on whether a user is logged in to a Google Account and authenticated against the ACL.
File versioning support for S3 is also available in this version. You can show hidden files to display all revisions to a file, which allows you to revert back to a previous version. Versioning can be enabled per bucket, as can S3 Multi-Factor Authentication Delete, which secures files from deletion by requesting a one-time passcode.
Although Cyberduck is currently only available for Mac, a Windows version is now in private beta. A Windows version will bring Cyberduck into competition with CloudBerry, which offers many of the same features but does not currently support Google Storage, Google Docs or Rackspace Cloud files (but does support Windows Azure).
As tools like Cyberduck and CloudBerry move to support different cloud providers, interoperability is proving to be a major selling point - and a crucial feature.