SvelteKit UI is a component library for building SvelteKit applications. If you’re looking for UI/UX prototyping tools that let you design, prototype, and collaborate without writing code, the following 20 solutions are strong alternatives.
Get targeted exposure with custom position pinning and highlighted placement.
Web‑based collaborative design tool with real‑time editing, component libraries, and interactive prototyping.
Mac‑only vector design app focused on UI design, symbols, and prototyping with extensive plugin ecosystem.
Cross‑platform design and prototyping tool from Adobe, offering repeat grids, auto‑animate, and voice prototyping.
Design‑to‑code platform that combines visual design with React‑based code components for high‑fidelity prototypes.
All‑in‑one design, prototype, and hand‑off solution with advanced animation and collaboration features.
Powerful wireframing and prototyping tool for complex interactions, conditional logic, and data‑driven prototypes.
Design system‑focused prototyping platform with interactive states, logic, and code‑component integration.
Simple web‑based design, prototype, and user testing suite with hand‑off features for developers.
Browser‑based prototyping tool that lets you create fully interactive mobile and web prototypes without code.
Low‑fidelity wireframing tool focused on rapid sketch‑style UI concepts and quick iteration.
Visual web‑design platform that generates clean HTML/CSS/JS, allowing designers to prototype and launch production‑ready sites.
Open‑source, web‑based design and prototyping tool that supports SVG editing and collaborative workflows.
Free macOS prototyping app from Facebook, offering advanced interaction design and integration with React components.
Full‑featured prototyping platform for web, mobile, and desktop apps with conditional navigation and data integration.
Online wireframing and prototyping tool with drag‑and‑drop UI elements and real‑time collaboration.
Rapid prototyping tool that combines design, collaboration, and hand‑off with a large component library.
Design‑to‑development hand‑off platform that syncs designs from Figma, Sketch, or Adobe XD into style guides and specs.
Plugin for Figma/Sketch/Adobe XD that turns design files into responsive HTML, React, or Vue code.
Animation library for React that can be used alongside prototyping tools to create high‑fidelity interactive demos.
Open‑source UI component explorer that lets teams develop, test, and document components in isolation—useful for UI prototyping.