QuickMark - QuickMark makes everything possible.
showFoto - ShowFoto is the standalone image editor of the digiKam project.
QR Code Reader “Q” - Formerly QR Code Reader “Q,” now QRQR, is a smart code reader application.
PixBuilder - Free Photo Editing Software for PC
Lynkee Reader - Lynkee Reader is the best QR & Barcode Reader application on the market.
PhotoDemon - Lightweight portable BSD licensed photo editor for Windows focused on performance and usability.