Ubuntu One Desktop client on Ubuntu 11.10
|Initial release||May 13, 2009|
|Operating system||Ubuntu OS,
Mac OSX 10.6 and higher,
The service enables users to store files online and sync them between computers and mobile devices, as well as stream audio and music from cloud to mobile devices.
Ubuntu One has a client application that runs on Ubuntu 9.04 and later or Windows XP or newer, and Mac OS X 10.6 and higher. Other Linux distributions are supported through a console client. The source code is available through launchpad and can easily be compiled for other unix-like operating systems such as FreeBSD. There is an Ubuntu One music app for iOS devices. A free Ubuntu One account offers 5 GB of storage.
The Ubuntu One service is similar to services such as iCloud, Dropbox, Google Play Music, SkyDrive, SpiderOak, Box.net, Mozy, Wuala, Amazon Cloud Player, Humyo, iDisk, Jungle Disk and Live Mesh. Its client code is written in Python. It uses Twisted for its low-level networking and Protocol Buffers for protocol description. Data is synced over a custom protocol called "u1storage", and stored on Amazon S3.
Ubuntu One offers automatic upload of photos taken from Android mobile devices for immediate sync across computers; integration with Mozilla Thunderbird for contacts and with Tomboy for notes due to the access to the local CouchDB instance. It also has capabilities for purchasing DRM-free music while synchronizing them automatically with an Ubuntu One Account via the Ubuntu One Music Store (in partnership with 7digital).
Ubuntu One publishes APIs for developers wishing to build applications with file and data synchronization or music streaming.
There is not yet a native client integration for the Kubuntu variant of the Ubuntu operating system (as of January 2012). Kubuntu integration is under development and has also received a grant from the Google Summer of Code 2010.
Further criticism concerns the unclear revenue share that will be granted to the community. The Amarok development team has announced that they will not add support for the Ubuntu One Music Store to the Amarok media player for the moment, unlike the Magnatune media store, which returns 10% of the revenue produced via the interface to Amarok. Notably, Ubuntu One as a service falls under European law and can therefore not become subjected to US law enforcement claims within the scope of the US Patriot Act. However, since the Ubuntu One database is outsourced to Amazon S3,  Files stored in the Ubuntu One file stores are not encrypted.
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