Workona is a good app for this. Does it have the features you need?
Tab Cloud Chrome Extension does this. Tab Cloud was my primary tool for this until finding Tab Outliner. I would love to have the Tab Tree synced across devices. Starting with PC's and then to Mobile Devices. The Chrome sync native to chrome is terrible. However, using the chrome account settings and/or gmail settings the way TabCloud does it is pretty cool. Please let us know if this could be a possible feature. Syncing would make this a killer app. I'd also like to be able to turn tabs quickly into diigo bookmarks, wrike tasks and The Brain Thoughts.
Customer support service by UserEcho