G2iX is a global engineering firm founded in 2001 that focuses on open source solutions. It has award-winning engineers located around the world who deliver innovative cloud, automation, and application solutions using open source licenses. The document then discusses several open source licenses (GPL, MIT, BSD, Apache), their terms, compatibility, and reasons for using multiple licenses including dual licensing. It promotes using open source licenses like Apache for "gift" software usable in open or proprietary solutions, GPL for copyleft software, and LGPL for an "in-between" option. Finally, it outlines benefits of open source software and tools used at G2iX like Maven, Archiva, and Continuum for build automation, repositories, and continuous

2. G2iX Background
Founded 2001
Focused on enabling businesses with
innovative solutions
Award-winning engineering team Globally Delivered Engineering Services
World-class open source engineering
automation
Leading open source applications
Scalable cloud computing platform Build and Test Automation
Our employees from Australia to Germany,
from US to the Philippines consistently
deliver innovation for our worldwide
customers
Cloud Computing Infrastructure
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3. Open
Source
Licenses
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4. Open Source Licenses
Freedom to copy
Freedom to create derivative work
Freedom to distribute derivative work
Licenses must be distributed with the software
Licenses have a warranty disclaimer

5. Open Source Licenses
GNU General Public License (GPL)
strong copyleft license
requires distribution to remain under GPL terms
requires source code to be distributed together with the binary
cannot be used in a proprietary software
Linux, MySQL, Mozilla Suite, Alfresco

6. Open Source Licenses
MIT License
simplest, non restrictive
PuTTy, RoR, Liferay, EasyMock
Modified BSD Licenses
no contributor endorsement
can be used in a proprietary software
PostgreSQL, Debian

7. Open Source Licenses
Apache License 2.0
provides more protection to Open Source developer
no endorsement
redistribute in “Object or Source” form
LICENSE and NOTICE
Ant, Maven, Struts, Tomcat

8. Open Source Licenses
“Lesser” General Public License (LGPL)
compromise between GPL and BSD/MIT licenses
primarily used for software libraries
can be used by non-(L)GPLed program
Mozilla Suite, OpenOffice

9. Open Source Licenses
Eclipse Public License (EPL)
source code not required
allow different license for portions added or enhanced
business friendly
Websphere, Weblogic, Oracle

10. Open Source Licenses
Mozilla Public License (MPL)
hybrid of modified BSD license and GPL
code copied or changed under MPL must stay under MPL terms
can be combined with other licenses
Mozilla Suite App, Mozilla Thunderbird

11. License Compatibility
a license x is compatible with license y if work
licensed under x can be distributed under y terms
GPL compatible licenses

12. Dual Licenses
simultaneous licensing of software under both open-
source and proprietary licenses
motivations for dual licensing
ensure license compatibility
make money
recipients can choose which terms to use or distribute
the software under
MySQL, Ruby, Perl, Mozilla

13. MIT BSD ASF MPL EPL GPL LGPL
Disclaimer of Liability Yes Yes Yes Yes Yes Yes Yes
Preserve Copyright
Yes Yes Yes Yes Yes Yes Yes
Notice
Sold for a profit Yes Yes Yes Yes Yes Yes Yes
Use in Commercial
Closed Source Yes Yes Yes Yes Yes No Depends
Software
Use in endorsement Yes No No Yes Yes Yes Yes
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14. MIT BSD ASF MPL EPL GPL LGPL
Release changes
under a different Yes Yes Yes No No No No
license
Distribute binary
Yes Yes Yes Limit Yes No No
without source code
Link from code w/ a
Yes Yes Yes Yes Yes No Yes
different license
Copyleft No No No Yes Yes Yes Yes
Yes
GPL compatible Yes Yes No No Yes Yes
GPL3
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15. How Many Open Source
Licenses Do You Need?
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16. How Many Open Source Licenses Do You Need?
A “gift” license
usable in open source or proprietary software
Apache License 2.0
A “gift” license
A “sharing with rules” license
copyleft license
GPL 3
An “in-between” license
“sharing with rules” but usable in proprietary software
LGPL 3

17. Open Source
Software
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18. Benefits of Open Source Software
low or no cost
faster development process
reliability and quality of code
flexibility

19. Open Source Derived Solution
Distributed Engineering
with a common build
mapping
Asynchronous Extensive re-use
Development of software
around the artifacts
world (Ingredients)
Frequent testing of
integration and functions
Adapting the best practices of Open Source development processes to the Enterprise
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20. Maestro Build Automation
Maven Features
Declarative model for software builds
Modules for: Compiling / Assembly and
Distribution / Tests / Reporting
Plug In Architecture
Over 100 plug ins for multiple life cycle
Integration to IDEs
Rich reporting features
Policy Enforcement
Enables:
Repeatable build processes
Standardization
Higher visibility of progress
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21. Maestro Repository Manager
Archiva Features
Provides a common, high volume
repository for artifacts/ “ingredients”
Accessibility from multiple build
systems
Access control
Versioning of artifacts
Support for Remote Proxying
Support for Virtual Repositories
Role Based Security
WebDAV and WS Integration
Graphical Administration
Policy Management
Search Engine
RSS Feeds and Reports
Enables:
Build consistency
Higher re-use of components
Predictability of assembly
Unified source for developer tools
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22. Maestro Continuous Integration
Continuum Features
Automates the “build process”
Tight integration with Maven
Automatic triggering of builds
Reports for build success / failures and
charts over time
Deployment to multiple configurations
Automated Release Management
Distributed builds
Parallel Builds
Templating
Multiple SCM Support
Remote Access
Enables
Daily compilation of code from
distributed or Asynchronous teams
Automatic deployment to multiple
configurations
Automatic triggers for acceptance
criteria
Full life cycle reporting
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23. Resources
http://www.opensource.org
http://www.fsf.org
http://www.apache.org
http://maven.apache.org
http://archiva.apache.org
http://continuum.apache.org
http://www.g2ix.com
http://itmanagement.earthweb.com/osrc/article.php/12068_3803101_1/Bruce-Perens-
How-Many-Open-Source-Licenses-Do-You-Need.htm
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24. Thank you!