showFoto - ShowFoto is the standalone image editor of the digiKam project.
QuickMark - QuickMark makes everything possible.
PixBuilder - Free Photo Editing Software for PC
Barcode & QR Code Scanner - A free app which allow to read and generate barcodes for Android.
PhotoDemon - Lightweight portable BSD licensed photo editor for Windows focused on performance and usability.
ZXing - Barcode Scanner for Android