The latest snapshot build of Cyberduck supports multipart uploads to Amazon S3. The benefits are twofold:
- Concurrent upload of parts of the file (currently configured up to 10 parallel requests) making use of all available bandwidth.
- The size limit for files is 5TB instead of 5GB.
Give it a try if you are moving big files.
The neglected previous forum at cocoaforge.com for user questions and anwers has been closed and is now replaced with a Cyberduck Google Group which should make it easier to engage with other users of Cyberduck discussing workflows and possible issues. I’ll chime in regularly answering questions if needed. The Help Wiki is maintained as another great resource for users of Cyberduck.