Not fair! qmail, Mozilla Firefox ...
Posted Jan 3, 2006 7:51 UTC (Tue) by rickmoen
In reply to: Not fair! qmail, Mozilla Firefox ...
Parent article: Movable type and "almost free" software
qmail is not less free than Mozilla Firefox! You are not allowed to redistribute
modified versions of any of them. Firefox protects this with their trademark license, qmail in
another way, but it is the same restriction.
You can fork Firefox, i.e., distribute derivative works in either source or binary form and use
them for any purpose, provided you don't call it Mozilla or Firefox. That's what Flock is, after all.
qmail's generous but proprietary licence does not permit that. For
example, the netqmail authors have (commendably) done absolutely the maximum possible to
make the problem minimal, but neither they nor anyone else (except Prof. Bernstein) may lawfully
distribute it in any binary form.
It would be nice if qmail advocates would content themselves with having a well-performing
and generally secure if aging MTA, and not continually attempt to stretch the truth past the
LaTeX has a similar license.
Not exactly. Knuth said: "The program for TeX is in the public domain, and readers may
freely incorporate the algorithms of this book into their own programs. However, the use of the
name TeX is restricted to software systems that agree exactly with the program presented here."
(His typefaces have a similar restriction, and some country-specific hyphenation-pattern files are
restricted. It's a rather muddled situation.)
The LaTeX code itself, aside from encumbered pieces from Knuth and some other TUG
members, is open source under LPPL v. 1.3.
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