Open-source alternatives to Builder

OpenPanel is a self-hosted product analytics platform designed for tracking user behavior and visualizing product metrics on private infrastructure. It provides a comprehensive system for collecting events across web, mobile, and server environments while ensuring complete ownership of data. The platform distinguishes itself through a privacy-first approach, utilizing cookieless event tracking and regional data residency to simplify regulatory compliance. It integrates large language models via the Model Context Protocol, enabling users to query behavioral data and analyze trends using natura

WordPress is an open-source content management system and PHP-based application framework designed for building and maintaining websites. It functions as a visual, block-based website builder that allows users to construct layouts and manage digital content without manual code entry. The platform supports a wide range of operational needs, from managing individual sites to administering complex multi-site networks from a single installation. The system is distinguished by its highly extensible, plugin-driven modular architecture, which allows for the integration of third-party modules to add

Brick Design is a low-code page builder framework used to create drag-and-drop visual editors that generate production-ready layout and styling code for user interfaces. It functions as a visual layout engine and UI component orchestrator, providing the tools necessary to manage component constraints, nesting rules, and visual property configurations. The framework includes a dynamic template generator that utilizes logic rendering and expression variables to create reusable, data-driven page templates. It also operates as a multi-device design tool, offering viewport switching and adaptive s

This is a low-code visual drag-and-drop editor project for building web page layouts. It provides a canvas-based environment where users can assemble pages by placing, resizing, and rotating pre-built UI components through direct mouse interaction. The editor includes a grid-based alignment system that snaps components to invisible grid lines or other component edges for precise positioning. Components can be grouped into single units or locked in place to prevent accidental movement, and animations or custom actions can be bound to user interactions like clicks or hovers. An undo-redo comman

Vue Page Designer is a framework for building interactive, component-based visual editors within web applications. It provides a drag-and-drop interface that allows users to construct mobile-responsive web layouts by arranging pre-built components onto a canvas, enabling low-code page composition without manual coding for every layout change. The library distinguishes itself through a modular plugin architecture that allows developers to register custom interface elements, expanding the available building blocks for unique design requirements. It utilizes a recursive rendering strategy driven

h5-Dooring is a suite of no-code tools comprising a content management system, visual page designers, and a JSON-to-HTML generator for creating mobile-optimized websites. It provides a visual page builder for constructing landing pages and interactive sites using a block-based interface, alongside a no-code form builder for creating data collection forms with integrated analysis and export tools. The system utilizes a JSON-to-page transformation process to automatically convert structured data into functional web pages. It features a dedicated designer for mobile landing pages and splash scre

This project provides a containerized DevOps platform by packaging a complete GitLab installation into Docker images. It enables the deployment of a self-hosted environment that integrates Git version control, project management, and continuous integration and delivery pipelines on private infrastructure. The implementation supports deployment via Docker Compose or orchestration through Docker Swarm, allowing for scalable stacks with integrated container registries. It utilizes environment variables for configuration and supports the offloading of artifacts and backups to remote object storag

Webstudio is a visual CMS and website builder that provides a visual development environment for designing and publishing websites. It functions as an AI-powered design tool, a REST and GraphQL API client, and an atomic CSS compiler. The platform distinguishes itself through generative AI capabilities for creating layout variants and refining visual styles from text prompts. It integrates a headless CMS workflow that maps external data sources to visual components and utilizes a specialized compiler to convert design tokens into deduplicated atomic CSS for optimized page load speeds. The sys

Grav is a flat-file content management system that eliminates the need for a traditional database by storing site content and configuration in human-readable Markdown and YAML files. Built as a modular PHP web framework, it uses a hierarchical page routing system where the physical directory structure directly determines the site's URL paths. The platform is distinguished by its event-driven plugin architecture and a command-line interface that prioritizes system administration, deployment, and maintenance tasks. It utilizes a blueprint-driven system to generate administrative forms from stru

tmagic-editor is a low-code development platform and visual page builder used for designing frontend user interfaces through a visual canvas and component library. It functions as a frontend UI orchestrator that defines page structures and a schema-driven form generator that interprets structured data to create interactive user forms. The system employs a cross-framework component adapter to ensure consistent rendering across different frontend environments. It uses visual-to-JSON layout serialization to translate interface movements into persistent structured data, which is then processed by

Wagtail is an open-source content management system built on the Django web framework. It provides a structured, tree-based approach to content modeling, allowing developers to define custom page types and reusable content components that are managed through a highly customizable administrative interface. The platform distinguishes itself through its flexible, block-based content composition system, which enables editors to assemble complex page layouts dynamically. It also offers robust support for multi-site and multi-lingual environments, allowing organizations to manage distinct websites

ToolJet is a low-code development platform designed for building and deploying internal business applications. It provides a visual interface where users can drag and drop components to design layouts, connect to various data sources, and execute custom logic. The platform is built on a containerized architecture, ensuring that applications remain portable and consistent across different cloud and server environments. The platform distinguishes itself through integrated artificial intelligence capabilities that assist in the generation of user interfaces, database schemas, and data queries fr

Boto3 is the AWS SDK for Python, providing a programmatic interface for managing and automating AWS cloud infrastructure and services. It serves as a cloud management API client and resource manager for provisioning, configuring, and scaling virtual servers, databases, and storage. The library enables the implementation of infrastructure-as-code through declarative templates and scripts, allowing for the deployment of identical resource stacks across multiple accounts and geographic regions. It also provides a framework for coordinating distributed workflows, serverless functions, and contain

Fathom is a privacy-focused website analytics server written in Go. It monitors website traffic and page views without collecting personal data or using intrusive cookies, providing a self-hosted alternative for traffic monitoring. The system utilizes a Preact-based dashboard interface for visualizing traffic patterns and reports. Data is persisted in a SQL database analytics store, with support for MySQL, PostgreSQL, and SQLite. The project covers the collection of visitor data via lightweight tracking snippets and the management of that data through a pluggable storage layer. It includes m

Apihub is a deployable REST API mock server and public sandbox that provides a collection of functional endpoints for testing HTTP requests and building frontend portfolios. It serves as a pre-built backend infrastructure for simulating diverse services without requiring a custom backend. The project provides dedicated mock endpoints for various business domains, including ecommerce workflows, social networking features, realtime chat, and task management. It also includes specialized endpoints for verifying HTTP method behavior and header handling. The system implements a RESTful architectu

Formbricks is an open-source survey and feedback platform designed to help teams capture and analyze user insights through targeted, in-app, and website-based interactions. It functions as a comprehensive customer experience analytics system that allows organizations to maintain full control over their data, user attributes, and survey workflows. The platform distinguishes itself through its event-driven architecture, which enables precise behavioral targeting by triggering surveys based on specific user actions or application events. It supports deep integration with external ecosystems by a

The AWS Cloud Development Kit is an infrastructure-as-code framework that enables developers to define and provision cloud resources using familiar programming languages. By utilizing construct-based synthesis, it translates high-level, object-oriented code into declarative templates, allowing for the automated management of complex cloud environments through a centralized, code-driven control plane. The framework distinguishes itself through its ability to model infrastructure as a dependency-aware resource graph, ensuring that components are provisioned and updated in the correct order. It

NodeBB is a real-time, self-hosted community forum platform built on Node.js. It is designed to support scalable discussion environments by utilizing a document-oriented database for content storage and an in-memory engine for high-speed data retrieval and session management. The platform provides a comprehensive administrative interface for managing user groups, forum settings, and system health. What distinguishes the platform is its native support for federated social networking via the ActivityPub protocol, allowing forums to exchange content, synchronize discussions, and interact with de

This project is a comprehensive, community-curated directory that organizes a vast landscape of Python software libraries, frameworks, and tools. It serves as a centralized knowledge base designed to facilitate ecosystem navigation and accelerate developer discovery across the entire software development lifecycle. The directory distinguishes itself by providing a structured index of resources categorized by technical domain, ranging from foundational development utilities to specialized engineering fields. It covers high-level capabilities including artificial intelligence, data science, web

This project is a modular, terminal-based dashboard framework designed to aggregate and display real-time information within a grid-aligned interface. It functions as a centralized monitoring tool that translates data from local system resources, infrastructure services, and external web APIs into a unified, text-based display. The dashboard is distinguished by its plugin-based architecture, which allows users to encapsulate distinct data sources and display logic into isolated, independently managed modules. Users define their workspace through declarative configuration files or an interacti

Fuel CMS is a modular content management platform built on the CodeIgniter framework, designed for managing structured data and administrative workflows. It functions as a server-side application that provides a centralized dashboard for organizing site-wide variables, custom data models, and reusable content blocks. The system distinguishes itself through model-driven administrative generation, which automatically creates management interfaces by inspecting database schemas. It supports granular security through hierarchical permission access control and user activity auditing, allowing admi

VvvebJs is a self-hosted, vanilla JavaScript library for visually assembling web pages by dragging pre-built HTML components onto a canvas. It functions as a visual HTML editor and component-based page builder that requires no build tools or external dependencies, and can be deployed on a server with PHP or Node.js backend for saving and exporting pages. The builder organizes reusable HTML components into named groups for drag-and-drop assembly, and provides visual property editing that modifies HTML attributes, CSS styles, and class names through form controls and property panels. It include

Admin-bro is a Node.js administrative panel framework that automatically transforms database schemas into functional content management systems and backend dashboards. It provides a visual interface for performing create, read, update, and delete operations on records across various supported data sources. The framework uses model-driven UI generation to map database metadata to form components and employs an adapter-based abstraction layer to translate administrative operations into specific database queries. It supports the execution of custom business logic and operational workflows throug

VBlog is a multi-user content management system designed for creating, editing, and organizing blog posts. It consists of a Spring Boot blog platform providing a RESTful blogging API and a reactive Vue.js frontend application. The system enables multiple authors to publish and manage their own articles, supporting both multi-user blog management and personal knowledge publishing. The platform integrates content management capabilities with a layered service architecture, utilizing JWT-based session authentication and relational database persistence for data integrity.

React Email Editor is a drag-and-drop visual builder for creating responsive email templates, built as a React embeddable component. It also serves as an AI-powered email designer, a collaborative email design tool, and a React component library for composing emails programmatically with JSX. The editor represents designs as structured JSON and supports multi-format rendering for email clients, web pages, and PDF. What distinguishes this editor is its deep AI integration: users can generate full email templates from natural language, rewrite text with chosen intent, produce multiple text vari

EmDash is an open-source content management system built on Astro that combines a visual admin panel with a plugin-driven architecture and server-side rendering. It provides a complete content management system with structured content modeling, a rich text editor using Portable Text format, and a TypeScript API for type-safe content queries. The system supports authentication through passkeys, OAuth 2.1, and external providers, with role-based access control and fine-grained permission scopes. What distinguishes EmDash is its plugin development framework, which supports both native plugins ru

OrchardCore is a content management system and modular web framework built for ASP.NET Core. It serves as a foundation for creating, organizing, and delivering digital web content through a centralized system. The framework is designed for multi-tenant application hosting, allowing multiple isolated website instances to run from a single installation to share server resources and reduce administrative overhead. It employs an extensible architecture that enables the composition of independent functional modules and services into a cohesive application. The system provides capabilities for ent