Large Uploads for OpenStack Swift

We have integrated large upload support (5GB+) in 4.4.1 contributed by Joel Wright. OpenStack Swift requires files larger than 5GB to be split into segments on upload. This is quite cumbersome to implement as it is not transparently handled by the Swift server. By default Cyberduck is configured to use segmented uploads for files larger than 2GB which has the advantage to allow the resume of interrupted transfers.

Softlayer Large Upload

As corporate backing of OpenStack continues to be strong we continue to improve support for Swift features and interoperability in Cyberduck.


For some users the receipt validation in Cyberduck 4.4 available in the Mac App Store fails (#7557) if no default network interface is available and the application fails to launch. Users affected can request a donation key at  to switch to the free version available from the website. The 4.4.1 update is currently still pending expedited review by Apple for the Mac App Store. Thanks for your understanding.