The Linux Information Project: 25 Reasons to Convert to Linux

“Businesses, educational institutions, governmental agencies and
other organizations around the world are converting their computer
operating systems from Microsoft Windows to Linux at an increasing
pace. They are likewise converting their application programs from
commercial software to free software (also referred to as open
source software). There are at least 25 reasons for this situation,
including:

“(1) Because it is licensed under a free software license, Linux
(as well as other free software) is available at no cost. It can be
downloaded from the Internet for free, and it can be purchased in
disk or box form at trivial cost. One copy can be used on as many
computers as desired with no restrictions. This is in sharp
contrast to Microsoft Windows, which can easily cost US$100
[€83] or more per computer…”

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