Sketch - Professional digital design for Mac.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Inkpad - Inkpad - Vector illustration app for the iPad.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Affinity Designer - Professional creative software, exclusively for Mac.
GIMP - GIMP is a multiplatform photo manipulation tool.