First of all, please note that this mail expresses only my personal view. I am not a layer, nor a member of OSI or FSF. I apologize if I say something wrong.

Guilherme C. Hazan wrote:
Hi OSI folks,

Just to abuse a little from your patience.

Since i already misunderstood the concept of "open-source" (which does not
only means source-code-available, but also requires-free-distribution), are
there any other concepts behind "free software", except that they are free
of charge?

Be careful: free software does not mean free of charge. You can sell your copies of the software. What requires free software, as well as open-source, is that you give the possibility to your customer to freely distribute the your software, with or without modifications. This also implies that the customer must have access to the source. Free/open-source software also gives the right to use the software without restrictions (of time, number of machines, activity, country,...). The terms free software and open source are very close. Free software express the ideology of the Free Software Foundation: freedom in software is ethically good while proprietary software are made by bad guys/girls. Open source tries to be more pragmatic: open-source softwares are usually better (more stable, more performant) than proprietary ones, and economically viable. Moreover, the open-source definition is clear and the proposed license, the OSL (Open Software Licence) is truly a license, not an ideological text as the GPL.

I suggest that your read the chapter "The Open Source Definition", written by Bruce Perens for the book "Open Sources: voice of an open source revolution":
Open Sources: Voices from the Open Source Revolution
as well as

Free software is define by Richard Stallman in this page:

2nd question: if i want to say that my software is "open source" but not
"freely distributed", which term must i use?

I would suggest the term "Shared source", as defined by Microsoft:
Please note that is not the best place to discuss about shared source, since it definitely not open-source. Just look at the comment made by Eric Raymond:



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