Described herein is an issue tracking system (ITS) comprising: one or more processors; one or more non-transitory computer-readable storage media storing sequences of instructions which, when executed by the one or more processors, cause the one or more processors to: render a user interface including a plurality of user interface elements each listing an external service from which the ITS can receive external objects and associate the received external object with one or more issues maintained by the ITS; determine, in response to a user interaction with one of the user interface elements, whether an issue maintained by the ITS is associated with an external object received from the listed external service; and render within the ITS, a user interface for an application marketplace, the application marketplace user interface including a listing of one or more integration applications that, once installed, connect the listed external service to the ITS and associate external objects received from the listed external service with one or more issues maintained by the ITS.