I'm not a big fan of Gantt charts because they force things into a timeline, and tend to imply an order that things should be done (even when two tasks are unre

I'm not a big fan of Gantt charts because they force things into a timeline, and tend to imply an order that things should be done (even when two tasks are unrelated). I've found Gantt charts also to be a lot more rigid and less flexible as you inevitably discover new requirements throughout the project. TwigTask is more about capturing tasks that _can't_ be done until something else is done. For example, you can't build the authentication flow until you've created a table for user accounts. And, you can't release the project until the authentication flow is done. This is the first time I've seen Scapple, it's very interesting and a really similar concept. The main difference seems that TwigTask is designed specifically for task dependencies, rather than general mindmapping and note linking.