A presentation given in my first semester of year one of my Computer Science Degree at The University of Southampton, on the subject of Open Source Software. The presentation is aimed at students who are undertaking A-Levels.

2. Introduction
Produced using open source software
Explanations
Pros and Cons
Examples

3. What is Open Source Software?
Public Source code
Developed by Volunteers
Free of Charge
Open Source Initiative (OSI)
Not all freeware is open source

4. What are open source licenses?
Approved by the OSI based on the OSD
Intermediate forms not allowed
Modification &
Redistribution
Copyright for software
Restrictions
GPL (Gnu Public Licence)

5. What is Proprietary Software?
You often pay for it
You can't see the code
Developed by paid coders

6. What Are Proprietary Licenses?
Software owned exclusively by author
Restrictions to the use
Examples: MS Windows
Adobe Flash Player

7. Pros Of proprietary Software
Official support
More versatile
Testing
Familiarity

8. Cons Of proprietary Software
Can't alter it
Cost
Discontinuations
Not good for specialist needs
Spyware

9. Pros Of Open Source Software
Wait.... Not these guys...

10. Pros Of Open Source Software
For Businesses & Developers
Helps developers share costs
Helps companies stay present
Helps to build developer loyalty

11. Pros Of Open Source Software
For Consumers
Allows for verification of security claims
Increased reliability
Increased flexibility
Strong Communities

12. Cons Of Open Source Software
Code injection
Less vigorous testing
Some hardware issues
Requires more technical knowledge

13. COMPARISON
TIME!

14. Free
~£150
1% of Desktops
88% of Desktops
43% servers
42% servers
Portable
Compatible
Reliable
Familiar
Linux Windows
OperatinG Systems

15. Sets the minimum standard
Lots of vulnerabilities
Fast
Innovative
Displays HTML correctly
Firefox Internet Explorer
Web Browsers

16. ~£80
Free
Innovative
Reliable
Reliable
Imitates office well
Familiar
Open office MS Office
Office Suites

17. ~£250
Free
Easy to use
Unfamiliar interface
Stable
Extendible
Extendible
The Gimp Adobe Photoshop
Image Manipulators

18. Free ~£xx
Many Languages .Net Languages
Reliable Bloated
Easy to use Feature rich
Eclipse MS Visual Studio
IDEs (integrated development environment)

19. Free ~£40
Simple graphics Amazing graphics
Simple gameplay Great gameplay
Limited contend Huge amounts of content
Armagedtron Crysis 2
Games

20. Drum roll please...

21. Conclusion
Good for Hobbyists
Not so good for Businesses
Or Inexperienced End Users
But it's always getting better

22. References
(Sharma, Srinarayan; Vijayan Sugumaran and Balaji Rajagopalan (2002). "A framework for creating
hybrid-open source software communities" (PDF). Info Systems Journal)

23. We would just love
Credit to thank:
Photos:
1. http://www.wicklanddesign.com/Illustration.html (GPL)
2. BitterJug on Flickr (Creative Commons)
3. DavidDMuir on Flickr (Creative Commons)
4. AtmTX on Flickr (Creative Commons)
5. Linus Torvalds (Creative Commons: LinuxMag.com)
6. Richard Stallman (Creative Commons: Victor Powell)
7. The U.S. Army on Flickr (Creative Commons)
8. Ianer67 on Flickr (Creative Commons)
9. RobynneBlume on Flickr (Creative Commons)
10. GenBug on Flickr (Creative Commons)
Images 11-19 excluding 13 are registered Trademarks of the respective companies.
13. http://www.saqibsaab.com/2008/05/12/
20. Armagedtron screenshot
21. Crysis 2 screenshot
22. Archangel-Daemon on Deviant-Art (Creative Commons)