Here you can download the official Ubuntu 13.04 “Raring Ringtail” ISO for free.
On 17 October 2012, Shuttleworth announced that Ubuntu 13.04 (Raring Ringtail) would focus on “mobile metrics, things like battery life, number of running processes, memory footprint, and polish the rough edges that we find when we do that.” It was released on 25 April 2013, and support ended on 27 January 2014. The Wubi installer for Windows was dropped due to its incompatibility with Windows 8 and general lack of support and development. It included Unity 7, which had many performance improvements, and searching of photos and social media posts from the Dash.
Desktop image
The desktop image allows you to try Ubuntu without changing your computer at all, and at your option to install it permanently later. This type of image is what most people will want to use. You will need at least 384MiB of RAM to install from this image.
There are three images available, each for a different type of computer:
PC (Intel x86) desktop image
For almost all PCs. This includes most machines with Intel/AMD/etc type processors and almost all computers that run Microsoft Windows, as well as newer Apple Macintosh systems based on Intel processors. Choose this if you are at all unsure.
64-bit PC (AMD64) desktop image
Choose this to take full advantage of computers based on the AMD64 or EM64T architecture (e.g., Athlon64, Opteron, EM64T Xeon, Core 2). If you have a non-64-bit processor made by AMD, or if you need full support for 32-bit code, use the Intel x86 images instead.
64-bit Mac (AMD64) desktop image
Choose this to take full advantage of computers based on the AMD64 or EM64T architecture (e.g., Athlon64, Opteron, EM64T Xeon, Core 2). If you have a non-64-bit processor made by AMD, or if you need full support for 32-bit code, use the Intel x86 images instead. This image is adjusted to work properly on Mac systems.
Server install image
The server install image allows you to install Ubuntu permanently on a computer for use as a server. It will not install a graphical user interface.
There are three images available, each for a different type of computer:
PC (Intel x86) server install image
For almost all PCs. This includes most machines with Intel/AMD/etc type processors and almost all computers that run Microsoft Windows, as well as newer Apple Macintosh systems based on Intel processors. Choose this if you are at all unsure.
64-bit PC (AMD64) server install image
Choose this to take full advantage of computers based on the AMD64 or EM64T architecture (e.g., Athlon64, Opteron, EM64T Xeon, Core 2). If you have a non-64-bit processor made by AMD, or if you need full support for 32-bit code, use the Intel x86 images instead.
64-bit Mac (AMD64) server install image
Choose this to take full advantage of computers based on the AMD64 or EM64T architecture (e.g., Athlon64, Opteron, EM64T Xeon, Core 2). If you have a non-64-bit processor made by AMD, or if you need full support for 32-bit code, use the Intel x86 images instead. This image is adjusted to work properly on Mac systems.
Server install image
The server install image allows you to install Ubuntu permanently on a computer for use as a server. It will not install a graphical user interface.
There is one image available:
Texas Instruments OMAP4 (Hard-Float) server install image
For OMAP4 boards. See ARM/OMAP for detailed installation information.
For ARM hardware for which we do not ship preinstalled images, see ARM/Server/Install for detailed installation information.
