[curt.clifton]

OF stores its back ups in a transparent XML document, so data lock-in with OF isn't an issue.

For getting information into OF, what you see in the demo is what you get: just OmniOutliner and Kinkless GTD according to OF help. On the other hand, OF is highly scriptable, so a bit of Applescript can massage most any data into OF. An OmniOutliner is quite flexible about accepting pasted data, so a route through OO into OF might be reasonable.

What formats can Toodledo export to?