OpenStack Operations Guide
Tom Fifield & Lorin Hochstein & Jonathan Proulx & Everett Toews & Diane Fleming & Joe Topjian & Anne Gentle
Hack and HHVM: Programming Productivity Without Breaking Things
Owen Yamauchi
Getting Started With Varnish Cache: Accelerate Your Web Applications
Thijs Feryn
Gchq
Richard Aldrich
Application Development With Qt Creator
Ray Rischpater