Open-source Relume alternatives

Onlook is an open-source, visual-first code editor for building websites, prototypes and designs in Next.js and Tailwind CSS. Edits are made directly on the browser DOM with a Figma-like interface, while the changes are written to real code, so design and development share one source of truth.

You can create a Next.js app from text or an image or start from templates, then edit it visually, manage brand assets and tokens, create pages, browse layers and manage images. Developer tools include a real-time code editor, checkpoints you can restore, branching for design experiments, a CLI, an app marketplace, one-click deploys, shareable links and custom domains. Team collaboration is on the roadmap.

The README describes this repository as the open-source editor that started Onlook, while the hosted product for AI-native designers is in early access through a waitlist. It is licensed under Apache-2.0 and presented as an open alternative to tools such as Webflow, Figma Make, V0, Replit Agent, Lovable and Bolt.new. It suits designers who want to ship real code and developers who want a visual layer.

Webstudio is a visual development platform, released as open source, for developers, designers and cross-functional teams, and is presented as an alternative to Webflow. It is a visual builder that connects to any headless CMS and supports all CSS properties, and you own the data, components and infrastructure.

You can choose the hosted version or deploy your own instance, and the topics mention Cloudflare Workers, React, Remix and accessibility via Radix UI. The project provides a blog, documentation, a roadmap and an issue tracker for the builder, and a community on Discord.

Licensing is split. The Webstudio core, meaning all functionality in the repository, is free and open source under AGPL-3.0-or-later, while the optional sdk-components-animation package is proprietary and requires accepting the Webstudio, Inc. EULA. It is written in TypeScript. It suits designers and developers who want Webflow-style visual building with the option to self-host.

Plasmic is a visual builder for the web that enables rapidly designing and building applications and websites, with code optional. Its distinguishing idea is codebase integration: you register your own React components so that marketers and designers can arrange them visually, which the project says removes the ceiling usually associated with low-code tools.

The README names three main use cases: content management, where marketing teams drag and drop React components to build landing pages in a Next.js site within design guardrails, applications such as internal tools, client portals and business software built quickly by developers and technical users, and a website builder and design tool that is not limited to a built-in ecommerce platform, CMS or hosting. It works with Next.js, Gatsby and other frameworks, and also acts as a headless CMS.

Plasmic is licensed under MIT and written in TypeScript, with documentation, a quickstart, a forum and a Slack community. The visual editor is offered as a hosted service at plasmic.app, and demos show examples such as a Shopify headless storefront. It suits front-end teams that want non-developers to build with their component library.

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.