Open Source Hardware  
   Industry analysis paper for a college course proposing a business to apply the Open Source model to hardware.
   http://web.dodds.net/~hozer/opensource.html

Hamburg VHDL Archive  
   Provides a collection of free, public-domain or shareware, VHDL documentation, models, and tools.
   http://tech-www.informatik.uni-hamburg.de/vhdl/

Microcontroller: VHDL: PIC 16C5X  
   One stable version, and another one under development.
   http://www.mindspring.com/~tcoonan/

Linux Today  
   Richard Stallman's thoughts on free hardware.
   http://features.linuxtoday.com/stories/6993.html

DAISY  
   Aims to make VLIW and other novel ILP architectures hundred percent compatible with popular existing architectures such as PowerPC, x86, and S/390, as well as the Java Virtual Machine.
   http://www.research.ibm.com/daisy/

SystemC  
   Broadly supported C++ open source language and simulation kernel for modeling and implementing electronic systems.
   http://www.systemc.org/

OpenCollector Database  
   Site has a searchable index of many designs, tools and manufacturers.
   http://opencollector.org/

Writings on Open Source Hardware  
   A collection of links to writings on themes related to Open Source Hardware like definitions, libraries, talks and conferences.
   http://opencollector.org/Whyfree/

Art Interface Device  
   The Art Interface Device (AID) is a microprocessor platform for building electronic installation art. It can also be used as an interface between such artworks and computers. It will enable the artworks to respond to people and the physical environment
   http://www.interaccess.org/aid/schedule.html

ThinkCycle: Open Collaborative Design  
   Non-profit initiative that supports open source development and hosts a public repository of engineering design innovations in critical problem domains, such as low-power devices and portable health-care solutions for rural settings.
   http://www.thinkcycle.org

The PalmOS Open Source Portal  
   Provides a database of links to Palm based open source hardware projects, such as memory cards and sensors.
   http://www.palmopensource.com/index.php3?category=23

SCEZ - Smart Card Library  
   Smart Card Library with documentation on hardware modifications to run that cards on a palm.
   http://www.franken.de/crypt/scez.html

PalmBot  
   A site that documents what you need to build your Palm based robot.
   http://www.mbhs.edu/~josborn/palmbot/intro.html

Ethernut  
   Open Source embedded Ethernet Board combining and ATmega 128 with Realteks RTL8019AS.
   http://www.ethernut.de/

Free Model Foundry  
   Advancing standard modeling practices within the electrical engineering community. Supporting the use of VHDL, Verilog, and IBIS modeling languages.
   http://www.eda.org/fmf/wwwpages/

Manticore  
   Formerly called "The HULK", Manticore is an open source hardware design for a 3D graphics accelerator. It is written entirely in VHDL.
   http://icculus.org/manticore/

Midi for the Pilot  
   How to build a midi interface for the palm pilot.
   http://www.flatfeetpete.com/~physicalbits/Pilot/PilotMidi.htm