This extension allows you to save sets of open windows and restore them with a click. The plan is to eventually have it save all of the layout and restore it every time. For now it will only restore the files that were open when you saved. To use it go to View->Other Windows->Worksets
To save a set type in a name and click the Capture button.
To restore a set click its name in the list.
To delete a set right-click on the name of the set and click delete.