I'm relatively new to GTD, but am applying it to my work and learning to adapt the tools I use often.
I'm an outliner; as a writer, I couldn't imagine writing a book or article without outlining (and, in many cases, need to have outlines for my proposals). So I've long been a user of Inspiration, which is a combined outliner/mind-map program.
I was surprised to find, in GTD, that David Allen didn't grok Inspiration: he puts it down, when talking about "brainstorming" software, saying "You might as well dump ideas into a word processor."
I wonder if he really used the program - Inspiration offers both a mind-map view and a standard outline view, so after you've brainstormed, you can switch to outline view and start organizing your ideas hierarchically.
In fact, Inspiration is the most flexible tool I've used for idea generation and management. Anyone else use outliners? Any thoughts on Inspiration? I'm wondering if Inspiration could be a tool for organizing tasks and projects, but I hesitate because of the lack of attributes (categories, etc.)