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From Canonical Ltd.:Ubuntu 12.04 Download For Laptop Windows 10
Ubuntu (64-bit) is a community developed, Linux-based operating system that is perfect for laptops, desktops and servers. It contains all the applications you need - a Web browser, presentation, document and spreadsheet software, instant messaging and other applications.
What do you need to know about free software?
Download the latest LTS version of Ubuntu, for desktop PCs and laptops. LTS stands for long-term support — which means five years, until April 2023, of free.
Ubuntu 18.04 Free Download
From Canonical Ltd.:Ubuntu 12 Download
Ubuntu (64-bit) is a community developed, Linux-based operating system that is perfect for laptops, desktops and servers. It contains all the applications you need - a Web browser, presentation, document and spreadsheet software, instant messaging and other applications.