Prototyping

High-fidelity sensor/haptic/voice prototypes without code

Free Meta node-based interaction prototyping (Mac)

Mac timeline tool for micro-interactions & transitions

Mac app for animated mobile UI prototypes

Logic-heavy wireframes with variables & conditions

Code-backed components for production-like prototypes

AI multi-screen product flows → Figma paste + React/TS/Tailwind

Prompt/PRD/screenshot → editable multi-screen prototypes

Intent-based AI design with DS-aware multi-screen flows

Prompt-to multi-screen interactive designs + code

Text/screenshot/diagram → editable wireframes & prototypes

Sketch/screenshot/prompt → wireframes & prototypes

Chat prompt → full clickable prototype (all screens/states/themes)

Open-source visual editor for React prototypes wired to coding agents

Prompt-native iOS prototypes running on real devices/simulator

Description/screenshot → live clickable prototype with real interactions

Web no-code interactive prototypes with states & gestures

Desktop hi-fi prototypes & simulations (Win/Mac)

Web all-in-one wireframe/prototype/collab + auto specs

Quick click-through prototypes + user testing

Scene-based prototyping with Magic Move, drivers, 3D layers

Research-driven prototyping with built-in analytics

Open-source design + prototyping (self-hostable)

High-fidelity interactive prototypes + AI sites

AI prototype/site generation inside Figma

AI sitemap → wireframes → Webflow/Figma/React components

Low-fi sketchy wireframes

Collaborative wireframes, mockups, diagrams

Free offline open-source GUI prototyping

Legacy collaborative prototyping (Freehand/DSM era)

Mac UI design with plugin-powered prototyping

Physics/state-machine UI engine → React/Swift runtimes

PRD/prompt → on-brand clickable prototypes + MCP/code

Open-source MCP that gives coding agents a visual canvas + design QA bar before code

Code-native UI design tool that outputs React components designers can own

Code-native AI design surface (design in real components, not vectors)

User-testing platform for prototypes with task analytics and preference tests

UX planning toolkit for user flows, sitemaps, and customer journey maps

Visual sitemap builder for planning site IA before high-fidelity prototyping

Free React/Tailwind design tool with 66 MCP tools for agents

Design+code single source of truth (Drew Wilson); Loupe companion

Prototype in your production codebase; extracts tokens/components

Canvas is real React+Tailwind; AI generate; export production code

Design-native IDE syncing canvas with codebase + agents

Builder.io OSS: prompt→HTML/Tailwind/Alpine screens in-browser

Animated slideshows/decks with MCP agents; export code/video

YC visual React editor + AI + GitHub for production apps

Visual design on live pages; AI writes code into project

Hand-drawn wireframing + AI BYOK + MCP + code export

Unicode box-drawing wireframes as text/Markdown/URL

AI UX research with simulated testers for designs

Auto-captures live product screens; AI usability watching

Figma-native chat partner generating editable components

Live in-app controls to tune UI — sliders, color, springs, easing — while you design