Technologies are described herein for serializing in-memory objects of an application program for purposes of comparison. A request to serialize in-memory objects of an application program is received. A list of one or more objects, properties, or methods to be serialized is read from a serialization driver file and the one or more objects, properties, or methods in an object memory of the application program are accessed through an object model exposed by the application program. Values from the one or more objects, properties, or methods in the object memory are serialized and stored in a generic object container that facilitates comparison between the serialized values from the application program and corresponding values from other versions of the application program.