Best Free Prototyping Tools 2026: 6 Options Compared

A free prototyping tool lets you link screens into a clickable flow before anyone writes code, and the free plans are tight enough that the limits decide the choice. Figma's Starter plan is $0 with unlimited drafts and is the default for most teams. Penpot is open source, and its Professional plan is $0 for up to 8 team members with unlimited viewers, which makes it the pick if you want open standards or to self-host. Uizard offers a free plan of 2 projects with up to 5 screens each and 3 AI generations a month. Justinmind's free plan allows 1 project with unlimited screens and viewers and it runs as desktop software as well as in the browser. Moqups gives 2 projects and 400 objects per project on one seat. Framer's free plan is $0 and suits prototypes that you may later publish as a website. When you compare, count three things: projects, screens per project, and collaborators. A free plan that caps screens at five suits a single flow but not a full app. Also test sharing, because viewers who need an account slow reviews. The trade-off is ecosystem against openness: Figma has the biggest plugin and community, while Penpot gives open-source freedom with a smaller ecosystem. Six options follow.

Figma

Starter plan is $0 with unlimited drafts and limited access to Figma products. Largest plugin community; the paid step starts at $16.

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: General interface and flow prototyping.

Compare: Figma alternatives

Penpot

Open-source and self-hostable. Professional plan is $0 for up to 8 team members with unlimited viewers; paid plans start at $7.

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 wanting open standards.

Uizard

Free plan: 2 projects with up to 5 screens each, 3 AI generations a month, 1x exports. Pro is $12 a month billed yearly.

Price: Free (Free: 2 projects with up to 5 screens each, 3 AI generations a month, 10 templates, 1x exports); paid from $12 per month, Pro billed yearly (Uizard pricing, checked 2026-10-23).

Platforms and license: Web. Proprietary.

Best for: Turning ideas into screens with AI.

Justinmind

Free plan allows 1 project with unlimited screens and viewers. Standard is $19 per editor per month; a $295 perpetual license is listed.

Price: Free (Free plan: 1 project with unlimited screens and viewers); paid from $19 per editor/month (Standard) (Justinmind pricing, checked 2026-10-23).

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

Best for: Detailed interactions on desktop.

Worth knowing: Annual billing is also $19 per editor per month; a $295 per editor perpetual license is listed. Platform list from general knowledge.

Moqups

Free plan: 2 projects, 400 objects per project, 1 seat, 25 MB image storage. Starter price currency was unclear on the page.

Price: Free (Free: 2 projects, 400 objects per project, 1 seat, 25 MB image storage) (Moqups pricing, checked 2026-10-23).

Platforms and license: Web. Proprietary.

Best for: Wireframes and light prototypes.

Framer

Free plan at $0 with a free Framer domain, 500 AI credits to try and 1 GB bandwidth. Paid from $10; best when the prototype becomes a 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: Prototypes that become websites.

Compare: Framer alternatives

Which one to pick

• You want the standard tool teams already use: Figma
• You want open source or self-hosting: Penpot
• You sketch a flow with AI help: Uizard
• Your prototype may become a real site: Framer