1. A method for undoing actions in an application comprising: launching an undo management process configured to operate with the application; building an object model for objects invoked by the application, wherein the object model comprises an object tree data structure having nodes containing metadata of an object; taking a first snapshot of the object model; freezing the object model; receiving a first action from the application comprising an edit to be applied to the object at a leaf node of the object tree data structure; unfreezing a first portion of the object tree data structure along a path of object nodes from the leaf node being modified by the edit up to its root node; applying the edit to the object at the leaf node of the object tree data structure; re-freezing the first portion of the object tree data structure to obtain a re-frozen object model; taking a second snapshot of the re-frozen object model; storing a difference between the first snapshot and the second snapshot into a first memory buffer as difference data representing the first action; receiving a second action from the application comprising an undo command configured to undo the first action comprising the edit to the object; retrieving the difference data representing the first action from the first memory buffer; storing the difference data into a second memory buffer; and undoing the first action comprising the edit to the object by restoring the object model back to its state when the first snapshot was taken.