I heard a phrase today that reminded me of my childhood: “...learning and sharing together”. I’m not sure if I ever heard this exact phrase, but it was definitely a theme that was central to my early education; it’s now a central theme of my life again, this time through free software.

"Ordinarily, when you think of the phrase ‘free software’, the definition that comes to mind is a piece of tool that can be used or modified freely without any restriction.

In the open source world, there are two kinds of freedom. There is software that is free as in beer, a mysterious phrase that relates to something which costs no money. Less common, though, is software that fits the second type of freedom, "free as in speech".

In his note, Stallman made clear the difference between Free and Open Source Software (FOSS) and open source as conceived by Eric Raymond and supporters in the business community. FOSS is not just "free as in free beer". Under FOSS software is free, not just for the user. The software itself has liberties.

Microsoft's recent survey proclaimed nearly half the population believe it is ok to use pirated software for personal use. This diminishes the argument by Linux advocates that you can use their operating system without any cost. Yet, you can't confuse free as in cost with free as in freedom. Here's what FOSS really means.

I have been pondering the meaning of “free” in association with Free Open Source Software (FOSS) in general and GNU/Linux in particular. If one asks a FOSS advocate what free means in regard to these one might hear the reply, “Free as in beer!” and/or “Free as in freedom!”.

For many years, the term "open source" has been subject to abuse. Despite efforts by the OSI (Open Source Initiative) to trademark the phrase, the USPTO (U.S. Patent and Trademark Office) claimed the phrase was too generic to be trademarked, thereby weakening efforts to guard against its improper usage, according to Danese Cooper, secretary and treasurer of the OSI board.

The methodologies of Open Source are not owned or guided by any one person. The closest thing we have are the Open Source Initiative (OSI) and support of the Free Software Foundation (FSF). The OSI certifies what qualifies as an open source license.

Hearing the terms "free software" or "open source," you might imagine that they referred to a single school of thought. Even "free and open source software" (FOSS) suggests only two different outlooks: Free software, which values political and philosophical freedom, and open source, whose main interest is enhanced software quality.