Silex Website Builder Review 2026: Free & Open Source

Is Silex a good website builder in 2026? Yes, if you want a free, open-source visual editor that outputs plain HTML and CSS you fully own. The Silex website builder has no subscription, no premium tier, and no lock-in: you design in the browser (or in the new desktop app), then publish to GitLab Pages, FTP, your own server, or a ZIP you can host anywhere. The trade-off is a real learning curve and fewer done-for-you features than Webflow or Wix.

This review covers what Silex v3 can do today, how publishing and hosting work, who it suits, and which alternatives to consider. See the live listing for Silex on WebsiteBuilders.Directory, or the official site at silex.me.

What Is the Silex Website Builder?

Silex is a free/libre visual website builder for static sites. It has been around since 2009 and is maintained by Silex Labs, a non-profit based in Paris, France. The code is on GitHub under the AGPL-3.0 license, and Silex is an OW2 project funded through the NGI0 Commons Fund. In 2026 it won the OW2 Best Project Award in the Technology category.

The current generation is Silex v3. At the time of writing, the latest stable release on GitHub is v3.9.0, with v3.10 in canary builds. The editor is built on GrapesJS, so you drag and drop elements, but the panels speak real HTML and CSS: the box model, flexbox, classes, selectors, and CSS variables.

Silex’s own homepage is upfront about the fit: it is aimed at web professionals, agencies, students learning design, and teams that want static-site performance. It also says you may prefer something else if you need zero learning curve or a site live in 10 minutes. We agree with that framing.

Who Silex Is For (and Who Should Skip It)

Freelance web designers who want to build client sites visually, export standard HTML, and host them anywhere.
Agencies that build many small sites and don’t want a per-site platform bill.
WordPress developers who want to keep WordPress as the content backend but replace the theme layer with a visually designed static front end.
Students and learners, because what you learn in Silex is plain web standards, not one vendor’s interface.
Privacy-minded makers. Silex says the sites you create carry no tracking and no third-party cookies.

Skip it if you want a hosted all-in-one builder with templates, a store, forms, and support built in. You’ll be faster with Wix, Squarespace, or Carrd for a simple page.

Key Features of Silex v3

Visual editor based on web standards

You build pages with blocks, then style them in a Style panel that maps directly to CSS properties. There are HTML, CSS, and JavaScript editors for custom code, breakpoints for responsive design, and symbols for reusable headers, footers, and components across pages.

Static HTML output

Silex publishes clean HTML, CSS, and assets. Static sites are fast, cheap to host, and have no database or plugin layer to patch, which is a real security and maintenance win over a typical WordPress theme.

CMS and dynamic data

“Static” doesn’t mean “no content updates.” Silex can bind components to WordPress, Strapi, Squidex, or any GraphQL API. Its build step, powered by Eleventy (11ty), can generate collection pages: one blog-post design becomes a page for every post in your CMS. Clients edit content in the CMS, and the site rebuilds.

SEO controls

Each page gets its own title, meta description, and Open Graph/social sharing settings. Combined with lightweight static output, that gives you a solid technical SEO base. You still have to write good content.

Plugins

Developers can extend Silex with server and client plugins in JavaScript or TypeScript, for example to add storage or hosting connectors.

Silex Desktop (early alpha)

Silex now has a desktop app for Windows, macOS, and Linux. It works offline, needs no account, and can publish to a local folder or push to a Git forge: GitLab, Forgejo/Codeberg, or SourceHut. It also includes an experimental AI assistant: Silex exposes an MCP server, so you can connect a local model (for example through Ollama) or another MCP-compatible tool. Silex labels the desktop app as early alpha, so expect rough edges.

Publishing and Hosting Options

This is where Silex differs most from Wix or Webflow. Silex doesn’t host your site on a closed platform. It hands your files to a hosting option you choose.

GitLab Pages (default online path): On the free online editor at v3.silex.me, you sign in with a GitLab account. When you click Publish, Silex commits your site to a GitLab repository, GitLab CI builds it, and GitLab Pages serves it. Custom domains are supported. One gotcha: Silex creates the GitLab project as private, so after the first publish you need to set Pages visibility to “Everyone.”
FTP: Upload directly to traditional web hosting. This is a built-in connector that whoever runs the Silex instance can enable.
ZIP download: Export the compiled site and deploy it to Netlify, Vercel, Cloudflare Pages, GitHub Pages, AWS, or any static host. The docs include guides for these.
Filesystem: On a self-hosted instance, write sites straight to a folder that Nginx or Apache serves.
Git forges from Desktop: GitLab, Forgejo/Codeberg, and SourceHut, as covered above.

Self-hosting Silex itself: You can run your own full instance (dashboard plus connectors) with Docker, from source with Node.js, or as a one-click app on CapRover. The docs recommend self-hosting mainly for security or compliance needs, custom plugins, or air-gapped setups. For most people, the online instance is enough.

Forms: Silex includes form elements but no form backend. You point the form at a service like Formspree or Basin, or at a self-hosted endpoint such as an n8n webhook. Conditional logic and multi-step forms aren’t supported out of the box.

Silex Pricing: Is It Really Free?

Yes. Our Silex listing shows the price as Free, and Silex’s own site says all features are free of charge and the software is 100% free and open source. Silex is AGPL-licensed, has no Contributor License Agreement, and offers no premium tier, so there is no paid plan to upgrade to.

The real costs are elsewhere:

Hosting: GitLab Pages is free. Your own server, FTP host, or a paid static host costs whatever that provider charges.
Domain: Bought from any registrar.
Your time: The biggest cost if you’re new to CSS layout.

Silex is funded by donations (Open Collective), sponsors, and grants. Its homepage also says you can talk to the maintainer about managed hosting or personalized advice. There is no published price for that, so check silex.me for current details.

Pros and Cons

Pros

Completely free and open source (AGPL), with no premium tier and no subscription.
No vendor lock-in: standard HTML/CSS output you can host anywhere and move at any time.
Real CSS control, closer to Webflow than to template builders.
Headless CMS support (WordPress, Strapi, Squidex, GraphQL) for dynamic static sites.
Fast, secure static output with per-page SEO settings.
Non-profit backing, no tracking, and the option to self-host.
Actively developed in 2026, with regular v3 releases and a new desktop app.

Cons

Steeper learning curve. You need to understand basic layout and CSS concepts.
The default online path relies on GitLab, which adds an account and a couple of setup steps.
No built-in store, form backend, or memberships. You add those through external services.
A smaller template library and community than Webflow or Wix.
Support comes from the community (forums and chat), not a support desk.
The desktop app is still early alpha.

Silex vs Alternatives

Silex vs Webstudio: Both are open source and Webflow-style. Webstudio is the more polished product, with managed cloud hosting (our listing starts at $20/mo). Silex is fully free with no paid tier, and more DIY. Read our Webstudio review.
Silex vs Webflow: Webflow wins on interactions, CMS polish, templates, client workflows, and support (our listing starts at $18/mo). Silex wins on cost, openness, and the freedom to host anywhere. See our Webflow website builder review 2026.
Silex vs Carrd: Carrd is the quickest way to get a simple one-page site live and is very cheap (our listing starts at $19/yr). Silex takes more effort but handles multi-page sites, CMS data, and full code ownership. Read our Carrd review.
Silex vs Wix: Wix is easier for beginners and bundles hosting, apps, and ecommerce (our listing starts at $17/mo), but your site stays on Wix. Silex trades convenience for ownership.

Builder	Starting price (our listings)	Best for
Silex	Free	Free, open-source static sites you fully own
Webstudio	$20/mo	Open-source visual CSS with cloud hosting
Webflow	$18/mo	Polished design, CMS, and agency workflows
Carrd	$19/yr	Quick one-page sites

Prices come from our directory listings. Always check the vendor before you buy.

Building a listings or directory site? Silex can design the front end over a CMS, but it isn’t a turnkey directory platform. Our directory website builder guide covers purpose-built options.

How to Get Started with Silex

Open v3.silex.me and sign in with a GitLab account, or download Silex Desktop from silex.me if you want to work offline.
Follow the official Quick Start or portfolio tutorial at docs.silex.me.
Build one page end to end, including mobile breakpoints, before you add more pages.
Turn your header and footer into symbols so you can reuse them.
Publish to GitLab Pages, set Pages visibility to “Everyone,” then connect your custom domain.

FAQ

Is the Silex website builder really free?

Yes. Silex is free/libre software under the AGPL. All features are included, and there’s no premium tier. You only pay for things like a domain or hosting you choose outside GitLab Pages.

Is Silex open source?

Yes. The source code is on GitHub (silexlabs/Silex) under the AGPL-3.0 license. Copyright is held by the non-profit Silex Labs, and there’s no CLA, which Silex says keeps the license from being changed.

Can I download Silex?

Yes. Silex Desktop, currently in early alpha, is available for Windows, macOS, and Linux from silex.me/download. You can also self-host the full web app with Docker or Node.js.

Can Silex publish to GitHub Pages?

Not with a one-click button. The built-in hosting options are GitLab Pages, FTP, filesystem, and ZIP download. You can export the site and deploy it to GitHub Pages, Netlify, Vercel, or Cloudflare Pages. The Silex docs explain how.

Is Silex good for beginners?

It’s beginner-friendly if you want to learn how websites actually work. If you just want a site live in an afternoon with no learning curve, a hosted builder like Wix or Carrd will be faster.

Is Silex a good Webflow alternative?

For freelancers and agencies who value cost and ownership over polish, yes. For advanced interactions, a large template marketplace, and built-in client billing, Webflow is still ahead.

Final Verdict: Is Silex Worth It in 2026?

The Silex website builder is worth it if you want a free, standards-based visual editor and you’re happy to own your hosting. Silex v3 is under active development, with CMS bindings, symbols, per-page SEO, several publishing options, and a new desktop app. Because it’s non-profit and AGPL-licensed, it isn’t going to add a paywall later.

It’s not the right pick if you need everything bundled, including hosting, ecommerce, forms, and support, or if you want zero learning curve. In that case, start with Webflow, Wix, or Carrd. If you’re comparing open-source options, try Silex and Webstudio side by side.

Next steps: check the Silex tool page, compare Webstudio and Webflow, and browse more builders on WebsiteBuilders.Directory.

Silex Website Builder Review 2026: Free, Open-Source & Worth It?