Framer - 🔥 Design real websites right on the canvas.
Sketch - Professional digital design for Mac.
MontageJS - MontageJS framework is a platform to develop and create single page applications (which load single HTML page and dynamically update the app as the user puts in inputs or requests or interacts with the page.) with ease.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Marvel - Turn sketches, mockups and designs into web, iPhone, iOS, Android and Apple Watch app prototypes.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.