Open-source Mobirise alternatives

Instatic is a self-hosted content management system with a visual editor, content engine and publisher all running in a single Bun server. It is presented as an open-source alternative to Webflow, Framer and WordPress, and aims to replace the usual pile of separate services for CMS, framework, hosting, forms and analytics.

One server holds the canvas editor, content engine, media, authentication, forms, plugins and the publisher, with users, roles and a database included, backed by SQLite or Postgres. Pages it generates are plain semantic HTML with compact CSS, without framework runtime or builder attributes, so they behave like static files. The README suggests one-click deployment on Railway, with options for Render and Docker or a VPS with Caddy TLS.

Instatic is MIT licensed and very new: the repository was created in April 2026 and the latest release is v0.0.20, so expect rapid change. It targets developers, designers and small businesses who want to own their site stack and keep the published output lean.

Publii is a desktop-based content management system for static websites, available for Windows, macOS and Linux. It offers an interface comparable to server-based CMSs such as WordPress or Joomla, with posts, pages, themes and options, but produces a fast static site instead of running on your web server. It is written with Electron and Vue.

Because the app runs locally, you can create, update and change a site without an internet connection and then upload the changes in one click. It supports multiple upload targets, including standard HTTP or HTTPS servers, Netlify, Amazon S3, GitHub Pages, Google Cloud and SFTP. It is presented as a privacy-focused, SEO-friendly option that avoids the security and performance burden of a dynamic CMS, and is meant to be usable even for beginners.

Publii is licensed under GPL-3.0 and downloads are offered for exe, dmg, deb, rpm and AppImage. User and developer documentation, a community hub and a wiki are available, and instructions explain how to build the app yourself. It suits bloggers, small businesses and developers who want static output with a friendly editor.

Silex is a visual builder for static websites that can also pull in dynamic data. You design pages visually and export standard HTML and CSS that can be hosted anywhere, so there is no proprietary format, forced hosting, or subscription. It is released under the AGPL-3.0 license and presented as an open alternative to Webflow.

It is maintained by Silex Labs, a non-profit organization, and describes itself as free forever with all features included and no premium tier. It follows JAMstack practices, uses the GrapesJS editor according to its topics, and can pull content from WordPress through GraphQL. An MCP server is also mentioned among the project topics, and a desktop app can be downloaded alongside the online version.

You can try Silex online or run it yourself with Node.js. It suits web agencies, WordPress developers, freelance designers, and no-code builders who want a visual workflow with output they fully own. Because the output is standard web files, learning it also builds transferable HTML, CSS, and JAMstack skills.