GoodBarber - GoodBarber is a mobile app creation platform.
Sketch - Professional digital design for Mac.
Fuse - Fuse is a UX tool suite for mobile app designers and developers.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Dropsource - Mobile development platform for building native iOS & Android apps
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.