- Office 2007: The Missing Manual
- Office 2010: The Missing Manual
- Official Guide to Certified SOLIDWORKS Associate Exams: CSWA, CSWA-SD, CSWA-S, CSWA-AM
- Offline/Online - White Paper
- Oltre L'eBook
- On Animation
- On Video Games
- Online Marketing für Einsteiger
- Online-Redaktion - Ein Handbuch für Einsteiger
- Online@AsiaPacific
- Open Data – Data Journalism. Trasparenza e informazione al servizio delle società nell’era digitale
- OpenCV 4 with Python Blueprints
- OpenGL 4 Shading Language Cookbook - Second Edition
- OpenGL 4.0 Shading Language Cookbook
- OpenGL Game Development By Example
- OpenSCAD Basics Tutorial
- OpenSceneGraph 3 Cookbook
- Optimizing your Search, Increasing Your Search Engine Ranking