WyrdMystic
Inkling
Got to say I like Scrivener too - especially as you can have the corkboard and a piece of text up at the same time, so you can edit your work whilst looking at the outline.
You can also set tags like character names so you know who appears where and search for them so can you track through every instance of the character to make sure its consistant.
You can also set tags like character names so you know who appears where and search for them so can you track through every instance of the character to make sure its consistant.