Interface design and prototyping tools for product and UX teams.
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AstryxWeb Frameworks & UI LibrariesAstryx is an MIT-licensed design system from Meta for React 19 with 150+ components, seven themes, dark mode, page templates and a CLI. Agent docs and a hosted MCP server let AI coding tools use the same reference. Currently in Beta.Open sourceWeb platform
Builder.ioCMS & Website BuildersBuilder.io is a hosted visual editor and headless CMS that lets teams build pages from their own components. The MIT-licensed repository holds the SDKs for React, Vue, Svelte, Solid, Qwik, Angular and React Native, plus examples and plugins.Open sourceWeb platformFreemium
DooryImage & Graphic DesignOpen-source browser design editor for posters, social posts, slides, invitations and business cards, with guest editing, brand kits, animation, real-time co-editing, PNG to MP4 export, an opt-in MCP server and Docker self-hosting.Open sourceSelf-hosted
ExcalidrawDiagramming & WhiteboardsExcalidraw is an MIT-licensed virtual whiteboard with an infinite canvas, hand-drawn rendering, shape libraries and PNG, SVG and JSON export. Use excalidraw.com with encrypted collaboration, self-host the Docker client, or embed the npm package in a React app.Open sourceSelf-hostedFreemium
GridaUI/UX Design & PrototypingGrida is an Apache-2.0 canvas editor with a Rust and Skia engine, Figma import, slides, an SVG editor and AI generation through your own keys, Ollama or Grida credit. Desktop runs on macOS, Windows and Linux.Open sourceWeb platformFreemium
OnlookUI/UX Design & PrototypingOnlook is an Apache 2.0 visual editor and AI design tool for Next.js and Tailwind CSS projects. Edit on a canvas, review the code changes, branch designs and self-host with Supabase, or use the website's macOS app.Open sourceSelf-hostedFreemium
OpenPencilUI/UX Design & PrototypingOpenPencil is an open-source design editor for macOS, Windows, Linux and the browser. It reads and writes Figma .fig files, edits designs through a bring-your-own-key AI chat, and exposes documents to scripts, a CLI, MCP clients and a Vue SDK.Open sourceSelf-hosted
Quant-UXUI/UX Design & PrototypingQuant-UX combines a prototyping canvas with functional widgets, shareable usability tests, screen recordings, heatmaps and task analytics. It is GPL-3.0 software, free on quant-ux.com or self-hosted with Docker, MongoDB and SMTP.Open sourceSelf-hosted
tldrawWeb Frameworks & UI Librariestldraw is a source-available TypeScript SDK for embedding an infinite canvas in React apps, with custom shapes, an Editor API, self-hosted multiplayer sync and starter kits. Free in development; production needs a license key.CommercialSelf-hostedFreemium
WebstudioCMS & Website BuildersWebstudio is an AGPL-licensed visual builder for websites from Webstudio, Inc. It exposes every CSS property, binds data from any HTTP or GraphQL API, lets AI agents edit projects through MCP, and publishes to Cloudflare or exports sites for self-hosting.Open sourceSelf-hostedFreemium
YcodeCMS & Website BuildersYcode is an MIT-licensed visual website builder with a CMS, forms, localization, an AI agent, an MCP server and a REST API. Self-host it on Vercel and Supabase or use the managed Ycode Cloud plans.Open sourceSelf-hostedFreemiumExplore collections with tools relevant to this category, grouped by deployment, source model or workload.
2 matching tools from this category
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12 matching tools from this category
UI/UX Design & Prototyping tools support a defined technical workload. Start with the systems, users and operating constraints the tool must cover before comparing individual features.
What belongs in this category: A listing belongs in UI/UX Design & Prototyping when this workload is a primary product function rather than a secondary integration or marketing label.
iThub lists 13 tools in UI/UX Design & Prototyping. 12 of 13 are open source, 10 of 13 can be self-hosted, 13 of 13 have a free, freemium or open-source pricing model and 9 of 13 offer an API.
Use the resources that match your decision stage. Profile data and linked sources were refreshed through November 11, 2026.
