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KitchenDraw offers a free demo version on their official website. It allows you to test the interface and design capabilities, though it may restrict saving or advanced rendering. This is the only safe way to get a "portable" feel (if you install it on a virtual machine). Parasited New | Lia Lin
If you need a portable solution that runs in a browser, SketchUp Free is a viable alternative for basic kitchen layout planning. It requires no installation and is legally free.