Here is a list of HP/Linux references:
Amazon: Mix of HP-UX and Linux solutions as related on http://www.zdnetindia.com/techzone/linuxcentre/stories/42345.html.
Checkpoint: HP Secure OS for Linux (aka Trusted linux).
Side Effects: Port of their software Houdini on Linux.
Nothing Real: Port of their software Shake on Linux.
Boeing: Linux and HP clusters help Boeing R&D reduce costs as related on http://www.hp.com/products1/linux/infolibrary/boeing.html.
ViaWest: a hp/Linux ISP as related on http://www.hp.com/products1/linux/infolibrary/viawest.html.
Israel Aircraft Industry: a hp/Linux performance cluster user as related on http://www.hp.com/products1/linux/infolibrary/israel.html.
SpeedEra: a hp/Linux ISP as related on http://www.hp.com/products1/linux/infolibrary/speedera.html.
Dreamworks: The Shreck movie realised on HP netserver/Linux as related on http://www.zdnet.com/zdnn/stories/news/0,4586,2761566,00.html.
Cern: Performance cluster realised with HP netserver/Linux as related on http://hp-linux.cern.ch.
Dr. Dobb's Journal enables programmers to write the most efficient and sophisticated programs and help in daily programming quandaries.
Gain key insight into security problem and find the safest means to protect your technological assets.
Provides timely coverage of the technology, intelligence and insight needed to plan, implement and manage information-rich projects.
Free eBook: 
