ZoneProprietaryOpen Source
Operating SystemWindows, iOSLinux
Office SuiteMS OfficeOpenOffice
 Google Docs
Email, Calendar, etc.OutlookEvolution, Thunderbird
 gmail, Google Calendar, etc.
Photo EditingPhotoShopGimp
 pixlr.com
Desktop PublishingAdobe Indesign, Quark ExpressScribus
HTML EditingDreamWeaverNVue, Komposer
3D drawingCAD?Google Sketchup
Vector DrawingCorelDraw, Adobe IllustratorInkscape, Xara
 Google draw
Audio Editing(audio)Audacity
VOIPSkypeAsterisk

See http://en.wikipedia.org/wiki/Free_alternatives_to_proprietary_software