Open Source Sketch Alternative

Why choose an open-source Sketch alternative

Sketch runs only on macOS, which locks out any team member on Windows or Linux, and it requires a paid license per user. Files are stored in a proprietary format that other tools have to reverse-engineer or convert, which creates friction when a design system needs to move between tools or when a client wants to open a file without buying a license.

An open-source design tool built on web standards avoids both problems. Files based on SVG and CSS are inherently portable, and a browser-based tool runs identically on any operating system, so a design team isn't dictated by whoever chose the Mac.

What to look for

A Sketch replacement needs vector editing, component or symbol systems for design tokens, prototyping with interactive transitions, and real-time multiplayer collaboration for design reviews. Since exporting design specs to developers is a daily workflow, check how cleanly the tool hands off CSS values, spacing, and assets, and whether the file format itself is inspectable rather than a black box. Version history and the ability to work offline also matter, since a design tool tied entirely to a browser tab can be a liability during a client meeting with unreliable Wi-Fi.

Penpot as a Sketch alternative

Penpot runs entirely in the browser and is built with Clojure and ClojureScript on the backend, storing designs as SVG rather than a proprietary binary format, so exported assets are standard, inspectable files. It supports components with variants, a grid and layout system comparable to CSS Flexbox and Grid, interactive prototyping with animations, and real-time multiplayer editing. Because Penpot is self-hostable, design files can live on infrastructure a team controls instead of a vendor's servers, and there's no per-seat license: the open-source version is free for any number of users. A dedicated plugin imports Figma files into Penpot, which helps teams migrating an existing design system.