Silex — the visual builder for static sites

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.

Try Silex online | Documentation | Download the desktop app | Manifesto

Why Silex?

Most no-code tools lock you in: proprietary formats, forced hosting, subscriptions. Silex is different.

• Your data is yours — standard HTML/CSS output, export everything, host anywhere, leave anytime
• Real web skills — everything you learn in Silex (HTML, CSS, JAMstack) is transferable knowledge
• Community-owned — maintained by Silex Labs, a non-profit recognized as being of general interest. No investors, no exit strategy, transparent finances
• 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)

Desktop app (alpha) — download for Windows, macOS or Linux. Work offline, no account needed.

Contribute

git clone --recurse-submodules https://github.com/silexlabs/Silex.git
cd Silex
pnpm install && pnpm build && pnpm start

Then open http://localhost:6805. For Docker and production setups, see the self-hosting guide. To work on the desktop app, see desktop/README.md.

Useful links to get you contributing fast:

• Good first issues — start here
• Contributing guide — coding standards, PR process, discuss-first rule
• Community forums — ask questions, share ideas
• Chat — quick help
• Bug reports
• 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

2026 — DangTAnh, Alex Hoyau, vict0r, Mohammed Shoaib Choudry, Musfiqur Rahman Saimon, Sparsh Maurya, mikemikimike, Sparshm786, ZhangXiao, mdsaimon1232, [Ayush Dubey](http