Best Free Graphic Design Tools for UI/UX Mockups

Collaborative, cloud‑based design tool with a generous free tier; supports real‑time teamwork, vector editing, and prototyping.

Adobe’s UI/UX design and prototyping app offering a free plan with limited sharing and co‑editing capabilities.

Open‑source, web‑based design and prototyping platform that works with SVG, offering unlimited projects for free.

Free online whiteboard for sketching UI ideas, creating low‑fidelity wireframes, and collaborating with teams.

Free tier includes design, prototyping, and user testing for up to three projects; great for quick mockups.

Native Windows design tool from Icons8; fully compatible with Sketch files and offers free UI kits and assets.

Cross‑platform vector design app with a free version that supports UI layout, icons, and basic prototyping.

Simple, browser‑based vector editor ideal for creating UI components and wireframes without a learning curve.

AI‑powered design tool that turns sketches into digital UI mockups; free plan allows limited projects.

Free macOS app from Facebook for building high‑fidelity interactive prototypes with advanced animation tools.

Open‑source GUI prototyping tool offering a wide range of built‑in shapes for wireframes and mockups.

Free version provides drag‑and‑drop UI components, rapid mockup creation, and basic interaction linking.

Popular online design platform with free UI kit templates, icons, and easy drag‑and‑drop layout tools.

Free plan for handoff and collaboration; lets designers share style guides and specs with developers.

Design and prototype tool with a free tier that supports interactive components and code‑based animations.

Web‑based wireframing tool offering a free plan with unlimited projects and basic UI component libraries.

Minimalist online wireframing app with a free tier for low‑fidelity mockups and quick sketching.

Free plan includes unlimited wireframes, UI libraries, and basic collaboration for small teams.

Free version lets you create interactive wireframes and prototypes with a library of UI elements.

Free tier provides up to three public projects, offering drag‑and‑drop UI components and simple prototyping.

Free plan allows creation of low‑fidelity wireframes and basic interactive prototypes with limited components.

Figma’s collaborative whiteboard for brainstorming UI ideas, flowcharts, and quick mockups.

Free tier includes up to four boards for flowcharts, wireframes, and sticky notes, ideal for early‑stage UI design.

Online whiteboard with UI kit templates, sticky notes, and basic prototyping features for collaborative design.

Open‑source raster graphics editor; while not UI‑specific, it can be used for creating UI assets and mockups.

Free vector graphics editor suitable for designing UI icons, illustrations, and high‑resolution mockups.

Free illustration library that integrates with design tools, helping designers add ready‑made artwork to mockups.

Free collection of customizable SVG illustrations for UI mockups, with easy color and style adjustments.

Free high‑resolution photo library; useful for adding realistic imagery to UI mockups and landing pages.

Provides free icons, illustrations, and UI kits that can be directly imported into design projects.

Free repository of SVG assets and UI icons, searchable and ready for direct use in mockups.

Free color palette generator; helps designers quickly create harmonious color schemes for UI mockups.

Free library of web‑ready typefaces; essential for typographic decisions in UI design mockups.

Free icon set with scalable vector icons, widely used in UI mockups and prototypes.

Free collection of Google’s Material icons, ready for use in UI design and prototyping.