Code review is performed by initiating a source code editing session associated with a first user, where the source code editing session is controlled by a computer-based source code editing tool that is configured to accept changes to source code of a computer-based software application during the source code editing session, displaying on a computer display, in the context of the source code editing session, a source code portion of the computer-based software application, and displaying on the computer display, in the context of the source code editing session, a visual indicator that is associated with the source code portion, and that indicates that the source code portion was added or modified by a second user.