Best Free UI Design Tools 2026: 7 Options Compared

Free UI design tools split into two camps: browser-first collaborative editors and desktop apps that work offline. Figma and Penpot sit in the first camp, and both give you shared files, components and prototyping on a free plan, but Figma limits how much you get while Penpot caps editors at eight on its free professional plan and is open source, so you can host it yourself. Lunacy is the desktop option and works on Windows, macOS and Linux with no account required for local files, though its built-in icon and photo library asks for a link back or a subscription. Framer is better when the design is going to ship as a website, because the canvas publishes straight to a live page. Quant-UX and Pencil Project are lighter tools for clickable prototypes and wireframes. To choose, ask who needs to open the file. If developers and stakeholders must comment, pick a browser tool with a free viewer tier. If you work alone on a laptop with patchy internet, pick the desktop route. The trade-off to accept is lock-in: Figma files do not round-trip cleanly into other editors, so if you may move later, favour the tool whose file format you can export and keep. Each pick below lists the free limit that applies, so you can see what you give up before you start a real project in it.

Figma

The default for team UI work, with unlimited drafts on the Starter plan and AI credits per day, but the free tier restricts access to Figma products and full seats start at $16 a month.

Price: Free (Starter at $0: limited access to Figma products, unlimited drafts, 150 AI credits a day (500 a month)); paid from $16 per per full seat/month (Professional); annual rate not shown in the extracted text (Figma pricing, checked 2026-10-23).

Platforms and license: Web, macOS, Windows. Proprietary.

Best for: Solo designers and small teams.

Compare: Figma alternatives

Penpot

Open-source design tool with a free Professional plan for up to 8 team members plus unlimited viewers, 10GB storage and 7 days of version history. MPL-2.0 licensed if you want to self-host.

Price: Free (Professional plan at $0: up to 8 team members plus unlimited viewers, 10GB storage, 7 days of version history); paid from $7 per per editor/month (Unlimited), capped at $175/month; 14-day free trial (Penpot pricing, checked 2026-10-23).

Platforms and license: Web. MPL-2.0 (open source).

Project activity: 61.8k GitHub stars · latest release 2.18.5 (Oct 26, 2026) · last commit Oct 27, 2026

Best for: Teams that want an open-source Figma-style tool.

Lunacy

Free desktop editor for Windows, macOS and Linux, free for personal and commercial use per its docs. The bundled Icons8 assets need a link back or a paid subscription, and cloud documents need one too.

Price: Free (Free for personal and commercial use per Icons8 docs; built-in Icons8 assets need a link back or a paid subscription; cloud documents need a subscription) (Lunacy pricing, checked 2026-10-23).

Platforms and license: Windows, macOS, Linux. Proprietary.

Best for: Offline UI work on a laptop.

Framer

Free plan includes 500 AI credits, 1 GB bandwidth, a free Framer domain and up to three editors. Custom domains need a paid plan, so it suits designs that become the live site.

Price: Free (Free plan at $0: 500 AI credits to try, 1 GB bandwidth, a free Framer domain, 10 CMS collections, 1,000 pages, up to three editors; custom domains need a paid plan); paid from $10 per per month, billed monthly or yearly (Basic) (Framer pricing, checked 2026-10-23).

Platforms and license: Web. Proprietary.

Best for: Designers who publish the design as a site.

Compare: Framer alternatives

Canva

Free plan exists for quick UI mockups and social-style layouts, though its limits were not captured on the page I checked. It is a graphic design tool first, not a component-based UI editor.

Price: Free (Free plan available; see the pricing page for its current limits) (Canva pricing, checked 2026-10-22).

Platforms and license: Web, Windows, macOS, iOS, Android. Proprietary.

Best for: Quick mockups for non-designers.

Compare: Canva alternatives

Quant-UX

GPL-3.0 prototyping and usability testing tool you can self-host with Docker. quant-ux.com is described as a demo, and the front-end repo needs a separate Java backend.

Price: Free (Open source and self-hostable; quant-ux.com is described only as a demo; front-end repo needs the separate qux-java backend) (Quant-UX pricing, checked 2026-10-23).

Platforms and license: Web, Self-hosted (Docker, Kubernetes). GPL-3.0 (open source).

Project activity: 2.7k GitHub stars · last commit Oct 11, 2026

Best for: Researchers who want to test clickable prototypes.

Worth knowing: Research, usability testing and prototyping rather than pure wireframing.

Pencil Project

Free GPL-2.0 desktop prototyping tool for Windows, macOS and Linux. It is a stencil-based wireframer without component libraries or live collaboration.

Price: Free (Free, open-source desktop prototyping tool; no price listed) (Pencil Project pricing, checked 2026-10-23).

Platforms and license: Windows, macOS, Linux. GPL-2.0 (open source).

Project activity: 9.9k GitHub stars · latest release v4.0.0 (Oct 24, 2026) · last commit Oct 27, 2026

Best for: Low-fidelity screens with no account.

Worth knowing: README shows ongoing development with v4.0 adding MCP support.

Which one to pick

• You design with developers and need comments and handoff: Figma
• You want open source or a self-hosted design server: Penpot
• You work offline on a desktop: Lunacy
• The design will become a published website: Framer