I used Workflowy for a couple years and loved it. But I craved something a _little_ more robust and found https://checkvist.com. It is similar to WF in terms of concept and UI but it has a lot of handy extras.
Hi, thanks for mentioning. I'm a Checkvist developer, if you have any questions - please ask.
Wow, has this really existed for seven years? Congratulations, smooth as silk, impressive!
Well, a bit more, actually. It will be 10 soon :)
Huh, this even exposes an Open API. I'm going to have to check this out.