PreFlight - Preflight is an Automated Web Testing tool. Allows everyone to automate Web UI tests.
ACDSee - ACDSee is an image viewer that uses very little system resources, and it has a small, sleek size that won't take up much space on your system.
AbTest.io - A free url shortener with A/B testing features
digiKam - Professional Photo Management with the Power of Open Source
Marpipe - Automate Your Ad Testing, Optimize Your Creative
Flickr - image and video hosting website