What are some alternatives?
When comparing Marketch and Sketch, you can also consider the following products
Relay for Figma - No more slice & export! Relay allows you to push changes from Figma straight to your codebase
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Zeplin - Collaboration app for UI designers & frontend developers
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Frontify Workspace - The overall tool for creative & design collaboration: - upload, manage & share assets
Affinity Designer - Professional creative software, exclusively for Mac.