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Open Source Software
Adzmely [email protected]
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Open Source Software
OSS Licenses
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OSS Licenses
Many licenses, but 4 dominate
BSD-new & MIT License : anything but sue
can incoporate code into proprietary software
General Public License (GPL)
if distribute, must distribute source code or written offer
cannot link(embed) into proprietary software
Lesser GPL (LGPL) a compromise must distribute source code or written offer
can link to proprietary software
Public Domain very rare
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OSS Licenses
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OSS Licenses
Permissive
permit the software become proprietary
Weakly Protective
prevent the software component (often a software
library) from becoming proprietary, yet permit it to be
part of a larger proprietary program
Strongly Protective prevent the software from becoming proprietary
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Open Source Software
Do you has to pay?
Free of Commercial?
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OSS : when, where, how?
Its important to understand that FLOSS does not
mean non-commercial
more expensive than proprietary ?
side by side do proprietary more reliable?
which is more secure?
which to choose? what to choose?
how to decide?
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OSS : expensive?
"Our startup honestly wanted to use OSS products. We do not want to spend time for
any OSS bug fixing so our main requirement was -official support for all OSS
products-. We thought were prepared to pay the price for OSS products, but then we
got a price sticker shock. Now behold: QT is $3300 per seat. We have dropped the
development and rewrote everything to C# (MSVS 2005 is ~$700). Embedded
Linux from a reputable RT vendor is $25,000 per 5 seats per year. We needed only3 seats. We had to buy 5 nevertheless. The support was bad. We will go for
VxWorks or WinCE in our next product. Red Hat Linux WS is $299. An OEM
version of Windows XP Pro is ~$140. A Cygwin commercial license will cost tens
of thousands of dollars and is only available for large shops. We need 5 seats.
Windows Unix services are free. After all, we have decided that the survival of our
business is more important for us then 'do-good' ideas.
- anonymous - http://ask.slashdot.org/askslashdot/06/10/04/0452244.shtml
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OSS : how to decide?
Establish a criteria for evaluating OSS products, as
well as procedures to adopt and maintain them.
Don't launch strategic initiatives without a thorough
risk assessment (e.g. Linux for desktop or for Back-Office is different!).
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OSS : how to decide?
OSS is not 'the' or 'the only' solution
intelligently choose
look around, ask questions
number of users widely adopted stable release ~> 2 years
mailing list / user group / documentation / howto
regualarly updated / active development
similar project / alternative
number of developers
commercial support / internal man power for support
security / clean code / number of vulnerablities
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OSS : how to decide?
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Open Source Software
Overcome common myth of
open source deployment
free/unreliable ?
expensive ?
support ?
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OSS : internal skill
within organisation
internal expertise
OSS solution when commercial just too expensive
do it your self
internal support
produce skill workers
technology consultant based on OSS technologies
etc
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OSS : skill set
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Open Source Software
OSS in life
the spirit within
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OSS : the spirit within
Are you OSS advocate?
using linux as 'the only os' in daily work
using OSS tools
OSS solutions : SMTP, Web, OS
promoting OSS
believe in OSS
etc
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OSS : the spirit within
if mostly 'yes' : OSS adopter
but
do you have the spirit?
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OSS : the spirit within
OSS in working environment
knowledge sharing : no such thing as mahaguru
eager to learn/teach and share
believed in sharing
open for everything
i am right you are wrong, this good this is bad etc
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OSS : which license are you?
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Open Source Software
Thank You
Q&A