Wireframe.cc - Sweet and simple online wireframing tool.
Posterist - Create beautiful photo collages in minutes on your Mac
WireframeSketcher - WireframeSketcher is a wireframing tool for creating wireframes, mockups and prototypes for desktop, web and mobile apps. It's a desktop app for Mac, Windows and Linux, and a plug-in for any Eclipse IDE.
FotoJet - Free Online Graphic Designer | Collage Maker | Photo Editor
Saola Animate - Easily create engaging HTML5 animations and interactive web content without coding skills
QwikBanners - Get your display network campaign going in few clicks, generate all sizes in few seconds, no coding or design skills required