The Roy Rosenzweig Center for History and New Media at George Mason University has announced a new project to develop open source software to help researchers organize digital photographs, funded by the Andrew W. Mellon Foundation.
The tool, which will be called Tropy, is a response to the challenges of managing large collections of images accumulated during the research process—a problem that is evident in this thread on DH Answers and this storify from Miriam Posner.
Now under development, Tropy will ultimately let you import photographs, adjust them to ensure they are of adequate quality for your purposes, and attach metadata to those images, using a template. After import, you will also be able to batch-edit the metadata across multiple images, as well as edit individual images. In Tropy, images will be able to be organized via collections and/or tags, and accessed in a variety of ways: by browsing image collections and tags via list and thumbnail modes; by sorting these views using all available metadata, such as date, source archive, and title; and by searching across all available metadata, including notes.