Systems and methods are provided for managing, in a software development environment, related files that are used for generating an output presentation document. A software development environment discovers the related files for an application (e.g., web page) that is being authored, and the software development tool presents a visual indication (e.g., graphical tabs) of the discovered related files in a user interface. The software development tool further aids in managing the presentation of the related files by enabling any of the related files to be selectively displayed in a designated interface (e.g., window). That is, a designated interface may be provided in which the content of any selected related file may be alternately displayed in response to a user selecting a visual indication of a related file. In one embodiment, the designated interface is a textual source code view interface that is provided by the software development tool.