The post you cite by Perens doesn't seem to mention the term "FLOSS" (or spelled out), right?
I have seen "FLOSS" used as an umbrella term for ALL of it, that is anything that is open source is also "FLOSS". But you are saying it exists to differentiate from "open source"? Huh. Just to muddy the waters yet further.
It doesn't use the term directly, no. Because to hackers, especially back in 1999, Free and Open Source were one in the same. It was just a difference of branding. However Bruce differentiates between "Open Source" and "Free Software" in writing and he only does so because public perception of what "Open Source" actually means had already been muddied in the year since OSI's founding and the freedoms afforded by FLOSS were already being de-emphasized and put on the back burner.
To quote Bruce:
> Most hackers know that Free Software and Open Source are just two words for the same thing. Unfortunately, though, Open Source has de-emphasized the importance of the freedoms involved in Free Software.....
> ......Sadly, as I've tended toward promotion of Free Software rather than Open Source, Eric Raymond seems to be losing his free software focus. The Open Source certification mark has already been abused in ways I find unconscionable and that I will not abide. I fear that the Open Source Initiative is drifting away from the Free Sofware values with which we originally created it.
There would be no need to make any kind of distinction between Free Software and Open Source if Open Source was being perceived as Free Software.
OSI was and always will be a marketing gimmick [0] created to sell the idea of open source to commercially interested parties.
> We realized that the Netscape announcement had created a precious window of time within which we might finally be able to get the corporate world to listen to what we have to teach about the superiority of an open development process. We realized it was time to dump the confrontational attitude that has been associated with `free software' in the past and sell the idea strictly on the same pragmatic, business-case grounds that motivated Netscape. We brainstormed about tactics and a new label. Open source, contributed by Chris Peterson, was the best thing we came up with.
Not to downplay OSI at all. It was extremely important and widely influential in Netscape's journey to becoming Firefox and I'd even argue is still important today. But the issue centered around what "Free" means ("Free" as in freedom - not beer - which is why the term "libre" is often used as well) and that "Free Software" already had a poor reputation in the business world and so it needed to be rebranded. Eric Raymond made it very clear that he places importance on phrasing and branding and attributes the tactics used by OSI to its success and why the Free Software movement failed. [1]
Honestly a comment by Havoc Pennington on that very post, dated Jun 28, 1999, sums up the issue perfectly.
>I think Eric's analysis of the facts is basically right. i.e. the "open source as business" stuff has gotten us a lot of popularity. The danger is that we fall for our own marketing program. That is, new community members join, and we have to say "we didn't really mean that. Really we meant freedom. The business stuff is for the suits." An increasing number of new members just don't understand freedom, or copyright, or anything like that; they joined "Linux," not "GNU."
I have seen "FLOSS" used as an umbrella term for ALL of it, that is anything that is open source is also "FLOSS". But you are saying it exists to differentiate from "open source"? Huh. Just to muddy the waters yet further.