This online service uses annotated digital images (photos or digitally-created documents) to allow collaborating on digital or physical projects. Using Shotlst, users can version both physical and digital content while providing metrics and activity reporting. Shotlst is also designing an API service for annotation in its back end that will work across a range of 2D and 3D spaces. This API is intended for use by a variety of front end software interfaces, including augmented reality and 3D spaces.