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Open Source and Free Software

Open Source and Free Software
by

Kevin Purrmann

on 6 December 2011

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Transcript of Open Source and Free Software

Free Software and Open Source Software Definition Open Source Software:

Open-source software (OSS) is computer software that is available in source code form for which the source code and certain other rights normally reserved for copyright holders are provided under a software license that permits users to study, change, and improve the software.
Definition Free Software

Free software, software libre or libre software is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with minimal restrictions only to ensure that further recipients can also do these things and that manufacturers of consumer-facing hardware allow user modifications to their hardware. Free software is generally available without charge, but can have a fee. ?
Why does these words mean different things? 1983 Richard Stallmann started
the free software movement Richard Stallmann founded
the free software foundation 1985 Open Source declaration occured
for the first time
Open Source Initiative (OSI) was founded 1998 free as in freedom not free as in free beer Freedom 0: The freedom to run the program for any purpose.
Freedom 1: The freedom to study how the program works, and change it to make it do what you wish.
Freedom 2: The freedom to redistribute copies so you can help your neighbor.
Freedom 3: The freedom to improve the program, and release your improvements (and modified versions in general) to the public, so that the whole community benefits. 1997 Netscape distributed its
source code ideologically means Freedom
therefore the term "Open Source" tries to avoid other associations
the source code is available
means the same as "Free Software" but it is a better term for marketing New merchandising strategies The availability of the source code and the right to modify it. The right to redistribute modifications and improvements to the code. The right to use the software in any way. There is no single entity on which the future of the software depends. It provides a new forum for democratic action. There is a huge community, which can help you to solve problems. There is no guarantee that development will happen. It is sometimes difficult to know that a project exist, and its current status. You do not have an direct contact person, if you have some problems. Costs. Projects can die. Open source software application may not be reliable. ... ... GPL vs. LGPL General Public License
subjetcs to the 4 facts of "Free Software"
copyleft
can be used only with programs which have the same licence

Lesser General Public License
subjetcs to the 4 facts of "Free Software"
copyleft
can be used for the external use as a library with commercial software

Thank you for your attention ? Sources:
- wikipedia.org
- openfacts.org
- opensource.org by Kevin Purrmann TEXT
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