The Cathedral and the Bazaar
Open source intelligence techniques
Rebel code
Open sources
Open source
Working in Public
Open Source Intelligence Investigation
Automating Open Source Intelligence
Open Sources 2.0
Penetration tester's open source toolkit
Data Analysis with Open Source Tools
Producing Open Source Software
The architecture of open source applications
Open source GIS
The Success of Open Source
Introduction to GIS Programming
OSINT
Understanding Open Source Software development
Using open source systems for digital libraries
Open Sources