The web belongs to everyone. Silex is a free/libre visual website builder — no lock-in, no subscription, no tracking. Design visually, export clean HTML/CSS, host anywhere.
Free forever — always free software (AGPL), all features included, no premium tier
"The only open source alternative to Webflow." — "The most powerful and graphically precise website builder that I have experienced."
Who is Silex for?
Web agencies — visual workflow, static output, scale client work without scaling your team
WordPress developers — visual frontend, content from WP via GraphQL, ditch the theme layer
Freelance webdesigners — create client sites without code, export standard HTML, host anywhere
No-code developers — go beyond Wix/Squarespace with full CSS control and no vendor lock-in
Features
GrapesJS-based visual editor — drag-and-drop page building with HTML, CSS, and JS editors
Static HTML output — fast, secure, easy to host anywhere
CMS integration — bind components to WordPress, Strapi, Squidex, or any GraphQL API
11ty compatible — generate static sites from Silex templates, deploy with CI/CD
Desktop app (alpha) — work offline, no account needed, AI-ready with built-in MCP server. Built with Tauri for Windows, macOS, Linux. Download it or follow progress.
Plugin system — extend with server and client plugins in JS/TS
SEO tools — meta tags, Open Graph, per-page settings
Self-hosting — Docker, Node.js, or one-click deploy on CapRover
Quick start
Use it online — v3.silex.me (free, requires a GitLab account for storage)
AI-assisted coding — setup guide for Claude Code, Cursor, opencode, etc.
AI / Vibe coding
Design websites with AI — open, local, yours. Learn more
The upcoming Silex Desktop app will let you create and transform sites through prompts: describe what you want, see it built live, refine the design in real time, publish clean HTML/CSS anywhere.
Silex uses MCP (Model Context Protocol), an open standard — so you choose your AI. Run a local model with Ollama for full privacy, or use any MCP-compatible tool: OpenCode, Goose, Claude Code, etc. The MCP server is optimized for small local models (7B+).
See the vibe coding roadmap for what's coming (prompt library, examples cookbook, best practices guide — contributions welcome).
MCP setup (for developers)
Once Silex Desktop is running, connect your AI tool to:
http://localhost:6807/mcp
OpenCode — add an MCP server in your config file with URL http://localhost:6807/mcp.
Goose — add a remote server in your profile config with endpoint http://localhost:6807/mcp.
Claude Code — claude mcp add --transport http silex http://localhost:6807/mcp
Any other MCP client — use a Streamable HTTP transport pointed at the same URL.
Contributors
Silex is the work of contributors from all over the world. This project is maintained by Alex Hoyau and owned by the non-profit Silex Labs
The list above is generated from the git history of this repository, so it only covers code. Silex
owes just as much to people whose work lives elsewhere: see THANKS.md.
