A few years ago I loved the idea of writing my own quests, and I found all sorts of interesting guides. I never ran into this bit of software, though. It lets you write an adventure using the software. Even if you didn’t want to write your own, the tutorial video on the first page is fascinating, and makes you appreciate what goes into writing a quest of any sort.
http://textadventures.co.uk/quest
The Last Chapter Gaming Blog 