The document discusses the open source philosophy, highlighting its definitions and the freedoms it promotes, such as access to source code and the ability to modify it. It includes a timeline detailing the history of open source software development and various licenses, along with reasons for using open source alternatives to commercial software. Additionally, it provides resources for individuals interested in getting involved in the open source community.

1. The Open Source Philosophy By Gautam Krishnan, III rd Year, C.S.E.

2. "For men may come and men may go, But I go on for ever." -Alfred Lord Tennyson (1809 – 1892) A quote to begin with ..

3. THE AGENDA : Definitions Timeline The Open Source Software Development Licenses : GNU-GPL Creative Commons Copyleft So, why do we use Open Source ? Open Source : Beyond Softwares How can I get involved?

4. DEFINITIONS

5. Definitions Open Source : Promoting access to the end product's source materials Free software : Matter of liberty, not price. GNU : A recursive acronym that stands for "GNU's Not Unix"

6. Definitions The philosophy of Open Source The freedom to run the program, for any purpose (freedom 0). The freedom to study how the program works, and change it to make it do what you wish (freedom 1). The freedom to redistribute copies so you can help your neighbor (freedom 2). The freedom to distribute copies of your modified versions to others (freedom 3).

7. TIMELINE

8. Timeline 1969 UNIX Development Begins. 1976 Emacs written by Richard Stallman, later in 1984, released under GNU-GPL. 1984 Richard Stallman starts the Free Software Foundation at MIT. 1985 GCC started by Richard Stallman. 1986 Programmer Larry Wall releases PERL 1991 Linux Kernel started by Linus Torvalds.

9. Timeline 1991 Python was released. 1993 The Wine project started. 1995 PHP, created by Rasmus Lerdorf, released publicly. 1996 Birth of KDE and Apache 1997 GNOME was first released. 1999 OpenOffice.org was founded. 2003 Firefox was developed. 2011 Linux Kernel 3.0 released.

10. THE OPEN SOURCE SOFTWARE DEVELOPMENT

11. The Open Source Software Development

12. LICENSES

13. Copyleft 0. the freedom to use the work, 1. the freedom to study the work, 2. the freedom to copy and share the work with others, 3. the freedom to modify the work, and the freedom to distribute modified and therefore derivative works.

14. Creative Commons Forefront of the Copyleft movement To counter the increasingly restrictive permission culture. Supporters : Google, Mozilla Foundation, Red Hat Types of CC Licenses : Attribution, Attribution Share Alike, etc.

15. GNU – General Public License Written by Richard Stallman in 1989 Accounts for about half of the free software which are licensed. Conflicts in various versions of the license. Under GPL : Linux Kernel, GCC, MySQL etc.

16. Wake up, it’s STORY TIME !

17. SO, WHY DO WE USE OPEN SOURCE?

18. So, Why do we use Open Source? 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. No per-copy fees can be asked for modified versions It provides a new forum for democratic action.

19. SOME OPEN SOURCE ALTERNATIVES TO COMMERCIAL SOFTWARES

20. Some Open Source Alternatives to Commercial Softwares Adobe Illustrator and Corel Draw - Xara Xtreme, Skencil, Inkscape Adobe Photoshop – GIMP Autodesk Maya, 3ds Max – Blender ICQ, MSN Messenger – Pidgin Microsoft Exchange Server – Zimbra

21. Some Open Source Alternatives to Commercial Softwares Microsoft Internet Explorer – Firefox, Rekonq Microsoft Outlook – Evolution, Mozilla Thunderbird Adobe Soundbooth – Audacity iTunes, Windows Media Player – Rhythmbox, VLC Media Player

22. OPEN SOURCE : BEYOND SOFTWARES

23. Open Source : Beyond Softwares OpenCola Vores ØI beer Brewtopia - Open-Source Brewery Nestle's Nespresso and Krups' Tassimo

24. HOW CAN I GET INVOLVED?

25. How can I get involved? Free Software Foundation www.fsf.org Open Source Initiative www.opensource.org http://Freshmeat.net http:// SourceForge.net http:// OSDir.com http://distrowatch.com

26. THANK YOU! Gautam Krishnan, III rd Year, C.S.E., SASTRA University facebook.com/gkthegr8 @gkthegr8 [email_address] Gtalk: gkthegr8