I’m using a freebie outliner (keynote 1.6.5), with separate nodes for each of my “files”. This lets me move stuff from place to place as it goes from action to follow-up, etc. Working ok so far (I haven’t read the book yet, am working from various web pages and previous franklin/covey process).

I really miss an excellent freeware outliner (name since forgotten, not one of the usual suspects ACTA,MORE) I used on the Mac back in the 90s. The key feature being the ability to create a task with a reminder, date, priority, etc. as an outliner node. This made projects’ tasks automatically move themselves into an actions file (essentially) when they were needed.