OmniFocus
It’s not a coincidence that I’m listing OmniFocus as the first application in my list. OmniFocus is a task management program, which doesn’t begin to hint at its importance to my workflow.
My entire life is controlled and organized in OmniFocus. Every home and work project and task that I have, from shipping the next release of ArcFM software to remembering to water the plants, is stored in this program. My Mac is the main home for this data, but it’s also synced to my iPad, which is how I read and edit this information at work, and my iPhone.
OmniFocus uses the principles espoused by David Allen in Gettings Things Done, the only personal productivity book you ever need to read.
For more information on The Essential Mac series, read the introduction
Das Haus von Ruh 
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