With Wubi (short for 'Windows Ubuntu-Based Installer') you can install/uninstall Ubuntu, Kubuntu, Mythbuntu, Edubuntu, Lubuntu and Ubuntu Studio on Windows with one-click (automatically).
As is known to all, the popularity of Linux system has some difficulty, one reason is its installation isn't too convenient.
Wubi is a full-automatic Ubuntu installer on Windows platform, with which you don't need to download the Ubuntu installation package, no need to make new partitions for Ubuntu, just a few steps, let Wubi fix everything for you.
Edition Statement
Due to the stability and compatibility problems, Wubi only supports Ubuntu up to version 13.10, and the Ubuntu official has announced no longer supports Wubi since version 13.10. So for the latest edition of Ubuntu, please boot from the LiveCD or USB to install it.
Related Links
Download URLs
| Version of Wubi and Ubuntu supported | Download |
| Wubi Rev 04 | Ubuntu-7.04 | Final |  |
| Wubi Rev 506 | Ubuntu-8.04 | Final | |
| Wubi Rev 515 | Ubuntu-8.10 | Final | |
| Wubi Rev 129 | Ubuntu-9.04 | Final | |
| Wubi Rev 273 | Ubuntu-12.10 | Final |  |
| Wubi Rev 284 | Ubuntu-13.10 | Final | |
More versions for Wubi here (from Wubi-7.04.01 to Wubi-9.04.129): http://sourceforge.net/projects/wubi/files/