Interface design and prototyping tools for designers
10 Tools Reviewed
Expert Curated
Regularly Updated
#1 Best Overall
Galileo AI (Stitch)
AI-powered design tool for creating user interfaces
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Galileo AI (Stitch) is a design tool that uses artificial intelligence to generate user interface designs from text descriptions. It serves designers and product teams looking to accelerate the UI design and prototyping process through natural language inputs.
Pros
Converts text descriptions into visual UI designs automatically
Reduces time spent on initial mockup creation
Helps non-designers create interface prototypes
Cons
Limited publicly available information about features and capabilities
No transparent pricing information available on website
Best for:Product designers and teams who need rapid UI prototyping from text descriptions
Build realistic, functional UX prototypes with no code required
From $29/mo
Axure RP is a desktop UX prototyping application for creating high-fidelity, interactive prototypes with conditional logic, dynamic content, and working form elements — all without writing code. It also serves as a documentation tool with flow diagrams, wireframes, and specification notes. The tool is aimed at professional UX designers and product teams who need realistic prototypes for usability testing and developer handoff.
Pros
Creates highly realistic, functional prototypes with conditional logic and dynamic data without code
Combines prototyping with documentation — flow diagrams, wireframes, and specs in one tool
Strong team collaboration with co-authoring, revision history, and integrated feedback via Axure Cloud
Cons
Steep learning curve due to the complexity of interaction events, conditions, and variables
No free tier — requires a paid subscription after the 30-day trial
Desktop application only — no web-based editor for prototyping
Best for:UX professionals who need high-fidelity interactive prototypes for testing and handoff
Code-based UI design and prototyping for designers and developers
Free / $49/mo
Free Tier
UXPin is a code-based design and prototyping tool that lets designers work with the same UI components developers use in production. It supports importing components from Storybook and Git repositories across multiple frameworks (React, Vue, Angular, Svelte), and features AI-assisted prototyping with multiple LLM models. The tool is primarily targeted at enterprise product teams and technical designers who need high-fidelity, interactive prototypes that can export production-ready code.
Pros
Design with actual production code components via Storybook and Git integration, ensuring design-development parity
Figma UI kit and React component library for modern UI design
Freemium
Free Tier
Untitled UI is a large-scale Figma UI kit and React component library offering 10,000+ components, 420+ page examples, and 2,000+ icons. It provides production-ready design assets and code components for designers and developers building modern web interfaces, with lifetime licenses and free updates.
Pros
Massive component library with 10,000+ variants covering virtually every UI pattern
One-time payment with lifetime updates — no recurring subscription fees
React components built on modern stack (React 19.1, Tailwind CSS 4.1, TypeScript 5.8, React Aria)
Cons
Figma-centric — designers using Sketch, Adobe XD, or other tools cannot use the Figma kit
React-only component library — no support for Vue, Angular, Svelte, or other frameworks
Large file size of the full PRO kit may slow down Figma performance on lower-end machines
Best for:Design teams and agencies needing a complete Figma UI kit to kickstart projects fast
Figma is a cloud-based design and prototyping tool used for UI/UX design, website creation, and design system management. It supports real-time multiplayer collaboration, developer handoff, and AI-assisted features including code generation and website publishing. It is widely adopted by design and product teams at companies ranging from startups to enterprises like Microsoft, Netflix, and Airbnb.
Pros
Real-time multiplayer editing lets entire teams work on the same file simultaneously
Design systems with shared components, variables, and libraries keep large organizations consistent
Browser-based with no installation required, works on any operating system
Cons
Requires internet connection for full functionality as it is cloud-based
Per-seat pricing becomes expensive at scale, especially for Organization and Enterprise tiers
Advanced features like branching, SSO, and org-wide libraries are locked behind higher tiers
Best for:Product design teams collaborating on UI/UX across design and development
Design with AI — generate UI designs from text prompts
Freemium
Stitch (formerly Galileo AI) is an AI design tool that converts text prompts into UI designs. It is aimed at product designers and developers who want to quickly generate interface mockups and prototypes without manual layout work.
Pros
Generates full UI layouts from simple text descriptions, saving significant design time
Reduces the barrier to creating professional-looking interface mockups
Useful for rapid prototyping and exploring multiple design directions quickly
Cons
Very limited public information available on the current website, making it hard to evaluate capabilities
Rebranding from Galileo AI to Stitch may cause confusion and suggests the product is still maturing
Pricing and feature details are not publicly documented on the homepage
Best for:Product designers and developers needing rapid UI prototyping from text descriptions
Prototyping for all — bring your idea to life with no code required
Free / $29/mo
Free Tier
Proto.io is a fully web-based prototyping platform that enables users to create interactive, high-fidelity prototypes using drag-and-drop components, pre-built templates, and timeline-based animations — all without code. It supports previewing on web and mobile devices, sharing via links or exports, and user testing through third-party integrations. The tool targets UX designers, product managers, entrepreneurs, and marketers who need to validate ideas before development.
Pros
Extensive library with 250+ UI components, 1000+ templates, and 6000+ digital assets out of the box
Advanced interaction and animation support including 80+ events, 40+ actions, and timeline-based animations
100% web-based with native iOS/Android preview apps for on-device testing
Cons
Free plan is very limited (1 project, 5 screens, 10 MB storage, no reviewers)
No real-time collaboration features prominently advertised — unclear multi-user editing experience
Pricing scales by users and projects rather than features, which can get expensive for larger teams
Best for:UX designers and product teams needing interactive prototypes without coding
Comprehensive React UI component library for building interfaces faster
Free / $15/mo
Free Tier
MUI is a widely-adopted open-source React component library centered on Material Design, offering pre-built UI components, advanced data components (MUI X), design kits, and templates. It's designed for React developers and teams who need accessible, customizable, production-ready components to accelerate frontend development.
Pros
Massive ecosystem with 93.9k GitHub stars, 5.8M weekly npm downloads, and 3,000+ contributors ensuring long-term stability
Highly customizable theming system that allows full design system implementation on top of Material Design
Comprehensive documentation with 2,000+ contributors and extensive examples for virtually every component
Cons
Tightly coupled to React — not usable with Vue, Angular, or other frameworks
Material Design defaults can require significant customization effort to achieve a non-Google look
Advanced MUI X components (Data Grid Pro/Premium) require per-developer paid licenses
Best for:React developers building data-rich web applications who need reliable UI components
Fast, focused wireframing tools for lean product teams
From $12/mo
Balsamiq is a wireframing tool designed for product managers, engineers, and founders who need to quickly visualize product ideas before investing in design or development. It provides drag-and-drop UI components, interactive prototyping, real-time collaboration, and a beta AI feature that converts screenshots into editable wireframes. Used by over 16,000 teams monthly, it focuses on low-fidelity wireframing to promote alignment and reduce rework.
Pros
Near-zero learning curve—anyone on the team can create wireframes immediately
Unlimited users on all plans, making it cost-effective for large teams
Deliberately low-fidelity style keeps stakeholder discussions focused on functionality, not aesthetics
Cons
Limited to wireframing only—no high-fidelity design, prototyping animations, or developer handoff features
AI features (image-to-wireframe) are not available in Desktop or Atlassian Server/Data Center versions
The low-fidelity sketch style may not satisfy stakeholders who expect polished mockups
Best for:Product managers and lean teams who need fast wireframing without design skills
Design and ship mobile apps with the power of iOS & SwiftUI
Paid
Play was a design-to-code tool for building native iOS and macOS apps using SwiftUI. It combined visual design with real code output, targeting designers and developers who wanted to prototype and ship mobile apps more efficiently. The product is being discontinued as of April 20, 2026, with the team moving on to a new project.
Pros
Combined visual design with real SwiftUI code output, reducing design-to-code handoff
Supported both iOS and macOS platforms for flexible workflows
Included Play-to-Xcode export feature for developer handoff
Cons
Product is being discontinued — support ends April 20, 2026
Limited to Apple ecosystem only (iOS and macOS)
No new accounts or team members can be added during wind-down
Best for:Designers wanting to build native iOS apps with SwiftUI output
