This document discusses business models for commercial open source software development using the GNU General Public License (GPL). It identifies several potential models including receiving external funding from public or private sources, generating internal revenue through services or customization while still sharing the core code, unfunded community development, or using the software internally. The document provides links to further discussions on funding open source projects and a video on the origins of GPL licensing.

1. Business models
for
commercial GPL
software development
Round Table Discussion June 1st 2010

2. GPL business models
• Externally funded ventures
* Public funding
* `Needed improvement’ funding
* Indirect funding
• Internally funded or revenue based
* `Best knowledge here’’ without constraints
* `Best knowledge here’ with constraints
* `Best code here’ without constraints
* `Best code here’ with constraints
* `Special’ licences
* `Brand selling’
• Unfunded developments
• Internal use
http://eu.conecta.it/paper/Economics_open_source.html

3. Links
• discussion on joomla-dev-general list:
http://groups.google.com/group/joomla-dev-general/
browse_thread/thread/78b918a635615bbc/46b33330
8f965084
• video from 2001 about the origin of GPL-software (and
some discussion about it):
http://www.alltogetherasawhole.org/profiles/blogs/revo-
lution-os