Although FOSS has a broad definition[1], most technical people refer to <i>Free Software</i> by the GNU interpretation, in which the Free in FOSS is &quot;Free as in Freedom, not Free as in Beer&quot;. FOSS is generally considered a subset of Open Source software.<p>You can charge as much as you like for FOSS[2].<p>Open Source is not the same as Source Available[3].<p>1. <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Free_and_open-source_software" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Free_and_open-source_software</a><p>2. <a href="https:&#x2F;&#x2F;www.gnu.org&#x2F;philosophy&#x2F;selling.en.html" rel="nofollow">https:&#x2F;&#x2F;www.gnu.org&#x2F;philosophy&#x2F;selling.en.html</a><p>3. <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Open-source_software#Open-source_vs._source-available" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Open-source_software#Open-sour...</a>