Techniques for debugging a computer program that includes multiple modules executing on multiple machines include receiving, at a unifying component, first data from a first machine. The first data indicates debugging information generated by the first machine. Second data is also received at the unifying component from a second machine. The second data indicates debugging information generated by the second machine. Based on the first data and the second data, third data is formed indicating a single integrated representation of debugging information for the computer program. The unifying component allows debugging information from several machines to be integrated and then presented to a user through a single debugger client.