Swift development currently targets Ubuntu Server 14.04, but should work on most Linux platforms.
Swift is written in Python and has these dependencies:
There is no current support for Python 3.
To get started with development with Swift, or to just play around, the following docs will be useful:
There are many clients in the ecosystem. The official CLI and SDK is python-swiftclient.
If you want to set up and configure Swift for a production cluster, the following doc should be useful: