1. Open Source Applications Mikko Mustalampi DAP02S

2. The Open Source Definition 1. Free Redistribution 2. Source Code 3. Derived Works 4. Integrity of The Author's Source Code 5. No Discrimination Against Persons or Groups 6. No Discrimination Against Fields of Endeavor 7. Distribution of License 8. License Must Not Be Specific to a Product 9. License Must Not Restrict Other Software 10. License Must Be Technology- Neutral www.opensource.org

3. Table of Contents -Introduction and definition -Brief history of OS -OS Licenses -Pros and cons -FAQ -Open source CMS demo -Conclusion -Q&A

4. Brief History of OS

5. History Prehistory: Unix, Internet free software, Hacker culture 22. January, 1998: Netscape announces to release source code of the Navigator 3. February, 1998: ”Open Source” term is born in Palo Alto California February, 1998: www.opensource.org website is opened by OSIwww.opensource.org Open Source definition 31. March, 1998: Navigator source is released

6. Open Source Initiative (OSI) Non-profit corporation dedicated to promote and manage open source definition Open source certification program Exists to spread OS to commercial world Hosts www.opensource.org

7. Licenses

8. Open Source Licenses

9. Licenses are approved by OSI Permission to state the program to be Open Source About 50 different licenses at the moment GPL, LGPL, BSD, MPL, Nokia Open Source License etc.

10. Example: GPL (GNU General Public License) ”...TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or with modifications and/or translated into another language. (Hereinafter, translation is included without limitation in the term "modification".) Each licensee is addressed as "you". Activities other than copying, distribution and modification are not covered by this License; they are outside its scope. The act of running the Program is not restricted, and the output from the Program is covered only if its contents constitute a work based on the Program (independent of having been made by running the Program). Whether that is true depends on what the Program does. 1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program. You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee. 2. You may modify your copy or copies of the Program or any portion of it, thus forming a work based on the Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided...”

11. Pros and Cons

12. Why to Go Open Source? Software evolves Improvement, adaptation, bug fixes in astonishing speed Developer communities Forums, Portals, peer-reviews Increased security Reliability

13. Pros Customers are not chained to company Program continues to live even company goes bankcrupt Not dependant of key persons Programs are free!...and come with source code

14. Cons Security Anyone can get the source code Regulation problems No ones responsible Job losses

15. Frequently Asked Questions

16. How to Make Money? Services tailoring, support, documents, books Components unique parts Merchandise T-shirts, coffee mugs...

17. What software is there? Operation Systems Linux, FreeBSD Internet Apache, BIND, sendmail, Mozilla, OpenSSL, CMSs Programming tools Perl, PHP, Python, Gnu compilers&tools www.sourceforge.net www.opensourcecms.com

18. Isn’t closed source safer? False sense of security Harder to find security holes Hard to distribute fixes

19. Open Source CMS demo

20. Mambo OS CMS www.mamboserver.com

21. Conclusion Future of Open Source programs look bright alltough Possible European Software Patent is one threat to OS.

22. Questions? Comments? Thank You!