What is open source


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What is open source

  1. 1. What is Open Source ? Anuchit Chalothorn anuchit@redlinesoft.net
  2. 2. What is Copyright?
  3. 3. CopyrightCopyright is a legal concept, enacted by most governments, givingthe creator of an original work exclusive rights to it, usually for alimited time. Generally, it is "the right to copy", but also gives thecopyright holder the right to be credited for the work, to determinewho may adapt the work to other forms, who may perform the work,who may financially benefit from it, and other related rights.
  4. 4. What is License?
  5. 5. LicenseLicense or grant license means to give permissionrefers to that permission as well as to thedocument recording that permission. In particular, alicense may be issued by authorities, to allow anactivity that would otherwise be forbidden.
  6. 6. Copyright != License
  7. 7. Open Source Definition
  8. 8. The Open Source DefinitionOpen source doesnt just mean access to thesource code. The distribution terms of open-sourcesoftware must comply with the following criteria: source : http://opensource.org/docs/osd
  9. 9. 1. Free RedistributionThe license shall not restrict any party from selling or givingaway the software as a component of an aggregate softwaredistribution containing programs from several different sources.The license shall not require a royalty or other fee for such sale.
  10. 10. 2. Source CodeThe program must include source code, and must allow distribution insource code as well as compiled form. Where some form of a product isnot distributed with source code, there must be a well-publicized meansof obtaining the source code for no more than a reasonable reproductioncost preferably, downloading via the Internet without charge. The sourcecode must be the preferred form in which a programmer would modifythe program. Deliberately obfuscated source code is not allowed.Intermediate forms such as the output of a preprocessor or translator arenot allowed.
  11. 11. 3. Derived WorksThe license must allow modifications and derived works,and must allow them to be distributed under the sameterms as the license of the original software.
  12. 12. 4. Integrity of The Authors Source CodeThe license may restrict source-code from being distributed inmodified form only if the license allows the distribution of"patch files" with the source code for the purpose of modifyingthe program at build time. The license must explicitly permitdistribution of software built from modified source code. Thelicense may require derived works to carry a different name orversion number from the original software.
  13. 13. 5. No Discrimination Against Persons or GroupsThe license must not discriminate against any person orgroup of persons.
  14. 14. 6. No Discrimination Against Fields of EndeavorThe license must not restrict anyone from making use ofthe program in a specific field of endeavor. For example,it may not restrict the program from being used in abusiness, or from being used for genetic research.
  15. 15. 7. Distribution of LicenseThe rights attached to the program must apply to all towhom the program is redistributed without the need forexecution of an additional license by those parties.
  16. 16. 8. License Must Not Be Specific to a ProductThe rights attached to the program must not depend on theprograms being part of a particular software distribution. If theprogram is extracted from that distribution and used ordistributed within the terms of the programs license, all partiesto whom the program is redistributed should have the samerights as those that are granted in conjunction with the originalsoftware distribution.
  17. 17. 9. License Must Not Restrict Other SoftwareThe license must not place restrictions on other softwarethat is distributed along with the licensed software. Forexample, the license must not insist that all otherprograms distributed on the same medium must beopen-source software.
  18. 18. 10. License Must Be Technology-NeutralNo provision of the license may be predicated on anyindividual technology or style of interface.
  19. 19. Open Source SoftwareOpen Source Software is software use license complywith the Open Source definition or using the OpenSource license.
  20. 20. Open Source LicensesOpen source licenses are licenses that comply with theOpen Source Definition — in brief, they allow software tobe freely used, modified, and shared. To be approved bythe Open Source Initiative (also known as the OSI)
  21. 21. Popular Licenses (1)• Apache License 2.0• BSD 3-Clause "New" or "Revised" license• BSD 2-Clause "Simplified" or "FreeBSD" license• GNU General Public License (GPL)• GNU Library or "Lesser" General Public License (LGPL) source: http://opensource.org/licenses/index.html
  22. 22. Popular Licenses (2)• MIT license• Mozilla Public License 2.0• Common Development and Distribution License• Eclipse Public License
  23. 23. Who made a business with Open Source• Global • Thailand – Google – Venture Catalyst (PENTA Cloud – IBM Client) – Microsoft – TOT (Cubic IPTV GMC) – Apple – CAT Telecom (CAT Cyfense) – Oracle – Infotronix (vTiger CRM on Cloud) – Facebook (PHP Hiphop) – Almacom (OpenERP on Cloud) – Yahoo (Hadoop) – OSDev (Alfresco, LibreOffice) – Amazon – Hosting Company run Linux – Rackspace – etc
  24. 24. ใครทำำธุรกิจโอเพนซอร์สบ้ำง• Global • Thailand – Google – Venture Catalyst (PENTA Cloud – IBM Client) – Microsoft – TOT (Cubic IPTV GMC) – Apple – CAT Telecom (CAT Cyfense) – Oracle – Infotronix (vTiger CRM on Cloud) – Facebook (PHP Hiphop) – Almacom (OpenERP on Cloud) – Yahoo (Hadoop) – OSDev (Alfresco, LibreOffice) – Amazon – Hosting Company run Linux – Rackspace – etc
  25. 25. Is Open Source good for Thailand ?Yes, We should keep a money in our country. In everysoftware we import. Its mean to we send a money toother country. And we shouldnt do that :)
  26. 26. Compare with ProprietaryOpen Source Proprietary • Free for use • Buy or using fee • Everyone can made a • Only a official partner business • Close source no one can • Study from source code access • Secure everyone can • Only owner can check a check a source security
  27. 27. OSS in The Cloud
  28. 28. OSS in The Cloud
  29. 29. OSS Platform in The Cloud