UXpin - Design is really about solving problems. UXPin is the UX Design Platform that gets that right.
Canva - Canva makes design simple for everyone. Create designs for Web or print: blog graphics, presentations, Facebook covers, flyers, posters, invitations and so much more.
Invision - Prototyping and collaboration for design teams
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Moqups - The most stunning HTML5 app for creating resolution-independent SVG mockups, wireframes & interactive prototypes for your next project
Sketch - Professional digital design for Mac.