What are some alternatives?
When comparing Akira and Marketch, you can also consider the following products
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Relay for Figma - No more slice & export! Relay allows you to push changes from Figma straight to your codebase
Sketch - Professional digital design for Mac.
Zeplin - Collaboration app for UI designers & frontend developers
Icons8 Lunacy - Free graphic design software with built-in resources. Fully compatible with Sketch and works offline
Frontify Workspace - The overall tool for creative & design collaboration: - upload, manage & share assets