Also strong
GUI prototyping desktop app: page templates, built-in UI stencils, linking, and export for early product design.
uiwireframeprototypeux
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9 tools match your filters
Honorable mention
Native Linux UI/UX design tool built for mockups and interfaces with canvas, artboards, and Vala/GTK stack.
uiuxmockuplinuxgtk
Top pick
Python library to spin up shareable web UIs for models—inputs, outputs, and multi-step demos with minimal code.
uidemopythonprototyping
Top pick
Python-first framework for data and ML apps: reactive widgets, charts, and model calls in a single script.
uidashboardpythondata-apps
Also strong
Open-source Svelte/TypeScript app that powers HuggingChat—multi-model chat, tools, and self-hostable UI patterns.
chatuillmself-hostedtaaft-repositories
Top pick
Library for building web and native user interfaces with components.
uijavascriptcomponents
Top pick
Progressive JavaScript framework for UIs.
uijavascriptframework
Top pick
UI component workshop for building and testing in isolation.
uicomponentsdocs
Top pick
UI toolkit for natively compiled mobile, web, and desktop from Dart.
mobiledartui