What are some alternatives?
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Adobe Illustrator - Adobe Illustrator is a vector graphics editor.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Adobe InDesign - Adobe InDesign is a desktop publishing software application.
OmniGraffle - OmniGraffle is for creating precise graphics like website wireframes, an electrical system designs, or mapping out software class.