Developer David Kocher has updated Cyberduck (http://cyberduck.ch/) — an open source FTP, SFTP, WebDAV, Cloud Files andAmazon S3 browser — to version 3.6. The upgrade adds support for Google Storage and file versioning in Amazon S3.

Google Docs support allows you to access your documents from within Cyberduck. It allows you to: download documents to various export formats; upload documents to your Google Docs account for storage or choose to convert documents to Google Docs format; and optionally convert PNG, JPEG and GIF images to Google Docs text documents using optical character recognition (OCR). Users with a Google Apps Premier Account can upload arbitrary files not supported by any of the Google Docs editor application.

Cyberduck 3.6 requires Mac OS X 10.5 or later. It’s freeware, but donations are encouraged to help fund further development.