Browsing Russian translation

1573.

Ubuntu is open source software. Simply put, open source software is software whose source code isn't owned exclusively by any one person, group, or organization, but is instead made freely available for download.\marginnote{The \textbf{source code} of a program is the files that have been written to make the program.} This makes Ubuntu different from proprietary software which requires users to purchase licenses before they are able to use the software on their computers.\marginnote{\textbf{Proprietary software} is software that cannot be copied, modified, or distributed freely.} Microsoft Windows and Adobe Photoshop are examples of proprietary software.