Open alternatives3
Open-source apps that replace Figma, Sketch and more
Penpot is an open-source design tool for drawing screens, websites and app interfaces, alone or with a team in real time. It can be used in the browser or self-hosted on your own servers, and is aimed at design teams and developers.
Plasmic is a visual builder where you drag and drop components to design websites and web apps, and it can plug into your existing code. It is aimed at marketing teams and developers who want to build pages without starting from scratch.
Quant-UX is a tool for designing, prototyping and testing app or website screens, and collecting data on how people use them. It is aimed at researchers, UX designers and product teams who want data-driven feedback on their designs.
What's missing
What people still miss here, and wish existed. Upvote what matters to you.
Before you build
Planning something for interface design? See what exists first, so you can reuse parts or explain what's different. Paste this into any AI assistant:
Fix the list itself
A project or closed app missing from this list, or a mistake on it? These open a short form on GitHub, and a mod reviews it. To say what a project can't do, use What's missing.
About this page
Replaces fully means it does the main job of these apps; Replaces partly means it covers some of it.
Licenses: every project here uses an open-source license (what each one means). Open core means some parts are paid or under another license.
GitHub stars are shown for reference. They measure popularity, not whether it replaces anything.
Verified means r/TrueOpenSource mods checked it: open-source license, maintained, and it really does the job.
How Open Source Everything works