FOSS INTRO
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Uvindu Perera
uvindu@foss.lk
uvinduperera:mozilla.org
uvindu.perera@lseg.com
Free and open-source software is software that can be classified as both free software and open-source software.
Free Software means that the user has the freedom to Run, Copy, Distribute, Study, Change and Improve the software.
There are some main essential freedoms as following.
The Freedom to RUN the program as you wish, for any purpose
The Freedom to STUDY how the program works, and CHANGE it so it does your computing as you wish.
Access to the source code is a precondition for this.
The Freedom to REDISTRIBUTE copies so you can help your neighbour.
The Freedom to DISTRIBUTE copies of your MODIFIED versions to others.
By doing this you can give the whole community a change to benefit from your changes. Access to the source code is a precondition for this.
Open-source software is a type of computer software in which source code is released under a license in which the copyright holder grants users the rights to use, study, change, and distribute the software to anyone and for any purpose.
The license shall not restrict any party from selling or giving away the software as a component of a larger software distribution containing programs from multiple sources.
The program must include source code, and must allow distribution in source code as well as compiled form.
The license must allow modifications and derived works, and must allow them to be distributed under the same terms as the license of the original software.
The license may restrict source-code from being distributed in modified form only if the license allows the distribution of "patch files” with the source code for the purpose of modifying the program at build time.
The license must not discriminate against any person or group of persons.
The license must not restrict anyone from making use of the program in a specific field of endeavor.
The rights attached to the program must apply to all to whom the program is redistributed without the need for execution of an additional license by those parties.
The rights attached to the program must not depend on the program’s being part of a particular software distribution.
The license must not place restrictions on other software that is distributed along with the licensed software.
No provision of the license may be predicated on any individual technology or style of interface.
If you are extremely focused on privacy, open-source is the only way to go – We'll take VPN as a example.
If you’re the kind of person who needs to have full control over their Internet privacy, open source options are simply better for your sanity.
