Z:gnu-www-ja-categories--1d2f6e-The term =26ldquo;open source=26rd/en

The term &ldquo;open source&rdquo; software is used by some people to mean more or less the same category as free software. It is not exactly the same class of software: they accept some licenses that we consider too restrictive, and there are free software licenses they have not accepted. However, the differences in extension of the category are small: nearly all free software is open source, and nearly all open source software is free.