gPhoto is a program and library framework that lets users download pictures from their digital cameras. The libgphoto2 library gives you access to hundreds of models of digital cameras on several platforms. GIT repo and Issue tracker lives at https://github.com/gphoto/ these days.
OpenImageManager, the new Opensource Image Manager written in C#. Includes Thumbnails feature, HTML Album Generator, localized to 10 languages and more...
Ertha is an open source GIS whose main focus is to guarantee easy extensibility and straightforward integration of custom modules. It provides basic geographic rendering and topologic analysis and exposes the main data structures loaded from shapefiles.
FoxHole is a filemanager with Steganography capability for Symbian OS phones