Open Source Design & Prototyping Tools using CSS
A curated collection of the best open source tools for designing interfaces and building interactive prototypes, covering wireframes, mockups, design systems, and developer handoff. using CSS.
Design editor that opens Figma files, runs AI, and stays local
Stars
7,894Last commit
11 hours agoLicense
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:
Security-first diagramming with no login required
Stars
7,617Last commit
16 hours agoLicense
Apache-2.0
Create professional diagrams online or offline with security-first approach. No registration needed. Works with Google Drive, SharePoint, Atlassian, and more.
Open Source Alternative to:
Open canvas for designing and building web apps
Stars
2,616Last commit
2 days agoLicense
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:
Docmost – Open-source wiki software with real-time collaboration, diagrams, AI, SSO, RBAC permissions and more.
Docmost