The best open source alternative to Squarespace is Plasmic. If that doesn't suit you, we've compiled a ranked list of other open source Squarespace alternatives to help you find a suitable replacement. Other interesting open source alternatives to Squarespace are: Ghost, Onlook, WordPress, and WebStudio.
Squarespace alternatives are mainly Low-Code/No-Code Platforms but may also be Website Builders or Frontend Development Tools. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Squarespace.
Build web apps, internal tools, and customer portals fast with visual editing, drag-and-drop design, and seamless codebase integration. Deploy anywhere without limits.

Plasmic is an open-source visual editing platform that lets you build websites and applications at remarkable speed. Unlike traditional no-code builders, it integrates directly with your existing codebase, giving you complete flexibility without being locked into a walled garden.
Key capabilities include:
Perfect for building: internal tools, customer portals, SaaS applications, e-commerce storefronts, content-managed websites, and custom experiences. The platform scales with your organization while letting you maintain control over your technology stack and deployment environment.
Looking for open source alternatives to other popular services? Check out other posts in the alternatives series and openalternative.co, a directory of open source software with filters for tags and alternatives for easy browsing and discovery.
Powerful, flexible content management system with built-in SEO, memberships, and monetization features for professional publishing.

Ghost is a cutting-edge, open-source publishing platform designed for modern creators, journalists, and businesses. It offers a seamless blend of simplicity and power, allowing you to focus on what matters most: creating and sharing exceptional content.
Key benefits of Ghost include:
Ghost empowers creators to own their platform, data, and audience without compromising on features or performance. Whether you're a solo blogger, a media organization, or a business looking to enhance your content strategy, Ghost provides the tools and flexibility to bring your vision to life.
Onlook is an open-source desktop app that allows you to visually edit React applications and automatically write changes back to your code in real-time.

Onlook brings the power of visual editing to React development, similar to how Webflow works for web design. This innovative tool allows developers to:
Key features:
Onlook is perfect for developers who want to streamline their workflow, designers who wish to contribute directly to React projects, and teams looking to bridge the gap between design and development.
Get started with Onlook today and experience a new way of building React applications that combines the best of visual design and coding.
A versatile, user-friendly platform for building and managing websites, from simple blogs to complex e-commerce stores.

WordPress is a powerful and flexible content management system that enables users of all skill levels to create and maintain stunning websites. With its intuitive interface and extensive customization options, WordPress offers a seamless experience for bloggers, businesses, and developers alike.
Key benefits of WordPress include:
Whether you're a beginner or an experienced web developer, WordPress provides the tools and flexibility to bring your vision to life. Its open-source nature and extensive ecosystem make it a future-proof choice for your web presence.
Powerful no-code platform for building responsive websites. Combines visual editing with full HTML/CSS customization.

WebStudio revolutionizes web development by bridging the gap between visual design and code-level control. This innovative platform empowers both designers and developers to create stunning, responsive websites without compromising on flexibility or performance.
Key benefits of WebStudio include:
WebStudio is perfect for freelancers, agencies, and in-house teams looking to streamline their web development process. Whether you're building a simple landing page or a complex web application, WebStudio provides the tools and flexibility to bring your vision to life efficiently and professionally.
Drag-and-drop interface for creating and optimizing digital experiences, with headless CMS and powerful integrations.

Builder is a revolutionary visual development platform that empowers teams to create, optimize, and deliver exceptional digital experiences without the need for extensive coding knowledge.
Key benefits of Builder include:
Builder's versatile platform caters to businesses of all sizes, from startups to enterprises, enabling them to create stunning websites, landing pages, e-commerce stores, and more. By bridging the gap between design and development, Builder accelerates the creation process and helps teams deliver exceptional digital experiences that drive results.
Looking for open source alternatives to other popular services? Check out other posts in the alternatives series and openalternative.co, a directory of open source software with filters for tags and alternatives for easy browsing and discovery.
A powerful, scalable platform for building custom websites and apps with serverless architecture, offering flexibility and cost-efficiency.

Webiny is an innovative open-source serverless CMS that revolutionizes web development. It combines the power of serverless architecture with the flexibility of a headless CMS, enabling developers to create scalable, high-performance websites and applications.
Key benefits of Webiny include:
Webiny empowers developers to build modern, scalable web projects while reducing infrastructure management overhead. Its open-source nature ensures transparency and community-driven improvements, making it an ideal choice for businesses and developers seeking a flexible, powerful CMS solution.
A flexible and extensible content management system for creating dynamic websites and digital experiences

Drupal is a powerful open-source content management system (CMS) that enables you to build flexible and scalable websites. With its modular architecture and extensive ecosystem of contributed modules, Drupal offers unparalleled customization options for creating complex digital experiences.
Some key benefits of Drupal include:
Drupal's active open-source community continuously improves the platform, ensuring it stays at the forefront of web technologies. Whether you're a developer, content editor, or site builder, Drupal provides the tools you need to create ambitious digital experiences.
Frappe Builder is an open-source, low-code website builder that enables users to create beautiful, responsive websites with an intuitive visual interface.

Frappe Builder is an innovative open-source website builder designed for simplicity, speed, and flexibility. It empowers users to craft beautiful websites effortlessly using an intuitive visual interface.
Key features of Frappe Builder include:
Frappe Builder bridges the gap between design and publishing, offering a seamless experience for both designers seeking ease of use and developers requiring customization. Whether you're creating a simple landing page or a complex website, Frappe Builder provides the tools to bring your vision to life quickly and efficiently.
Built on the Frappe Framework, this tool combines the power of a full-stack low-code framework with an accessible website creation process. It's ideal for businesses, developers, and individuals looking to establish a professional web presence without the complexity of traditional web development.
An open-source design platform featuring a customizable canvas editor, AI-powered tools, and React components for building modern web applications.

Grida is a powerful open-source design platform that combines a versatile canvas editor with developer-friendly features. The platform offers AI-powered prompts to assist with design and copywriting, along with a rich set of tools including pixel art creation, UI/UX building capabilities, and text editing features.
Key benefits include:
The platform is designed to be highly extensible and hackable, making it ideal for both individual developers and enterprise teams looking to create custom design solutions.