Tindddle - Tinder for Dribbble
ResizePixel - Free image editor to crop, resize, flip, rotate and convert images online
Dribbbleboard - A more convenient way of browsing through Dribbble
Bulk Resize Photos - Resize large photos in bulk
UI Jar - Hand-picked design inspiration for your real life projects
PQINA Photo Editor - A free, fast, mobile-friendly, online photo editor to quickly edit pictures.