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Open Source UI/UX Design Tools using Cargo

A curated collection of the best open source software for creating user interfaces, user experiences, and prototypes. using Cargo.

Penpot

Open-source UI design and prototyping for product teams

  • Stars

    61,546

  • Last commit

    11 hours ago

  • License

    MPL-2.0
Design, prototype, and hand off to developers in one platform. Supports design systems, tokens, flexible layouts, and AI workflows with real CSS/HTML output.

Open Source Alternative to:

Canva

OpenPencil

Design editor that opens Figma files, runs AI, and stays local

  • Stars

    Stars growing over the last 30 days9,221

  • Last commit

    11 hours ago

  • License

    MIT
A Figma-compatible design editor with built-in AI chat, headless CLI, real-time P2P collaboration, and a Vue SDK for building custom editors. No account needed.

Open Source Alternative to:

Figma

Grida

Open canvas for designing and building web apps

  • Stars

    2,688

  • Last commit

    5 days ago

  • License

    Apache-2.0
Design and build web applications on an open canvas with AI-powered tools, Figma integration, pixel drawing, and a modular SDK built for extensibility.

Open Source Alternative to:

Figma
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