Open core

Workflow automation platform with a self-hostable server and an embeddable builder that a SaaS product can place inside its own app.

JavaScript data grid library, in a Community edition under the MIT license and an Enterprise edition under a commercial license, for displaying and editing tabular data.

Open-source proof-of-work CAPTCHA widget and server verification libraries, with a paid self-hosted server (Sentinel) and a hosted service (Cloud).

Open source low-code platform for building internal tools, admin panels and dashboards.

Open-source React library of unstyled, accessible UI primitives and components for building web apps and design systems.

Self-hosted, open source identity provider with OIDC, SAML, LDAP and proxy authentication.

Block-based rich text editor for React applications.

Self-hosted platform as a service that deploys apps and one-click services to Docker containers behind nginx with automatic HTTPS.

Document generator that fills Word, Excel, OpenDocument and PowerPoint templates with JSON data and exports PDF and other formats.

Self-hosted analytics and engagement server that collects data from web, mobile and desktop applications and shows it in dashboards.

Desktop database management tool and SQL client for many SQL and NoSQL databases, with a free community edition.

JavaScript Gantt chart component for project scheduling, timelines and task dependencies.

Java enterprise search server with a built-in crawler, an admin console and a search UI, built on OpenSearch.

Open-source feature flag and remote config platform, available self-hosted or as a cloud service, with SDKs for web, mobile and server-side apps.

Native local development environment for Windows, macOS and Linux that runs runtimes, databases and web servers on the host, with local sites, HTTPS and an MCP server for AI coding agents.

Icon library and toolkit distributed as web fonts, SVG and CSS, with free icon styles and paid Pro styles.

Open-source experience management and survey platform, self-hosted or offered as a hosted cloud service.

Open source application for querying, visualizing, alerting on and exploring metrics, logs and traces.

Open-core feature flagging, experimentation and product analytics platform, available self-hosted or as a cloud service, with SDKs for application code.

Open-source GraphQL server that generates a GraphQL API over existing databases and other data sources, with a hosted Hasura Cloud edition.

Open-source component library for React web and React Native applications, built on React Aria Components and Tailwind CSS.

Open-source user infrastructure platform for authentication, teams, payments, email and analytics, with a managed cloud and a self-hostable server.

Open-source platform for managing application secrets, certificates and cryptographic keys, with a CLI, SDKs and a self-hostable server alongside Infisical Cloud.

Online shop software from JTL-Software-GmbH, written in PHP.

Commercial JavaScript UI component library for jQuery, with an open-source Kendo UI Core subset.

Open-source orchestration platform for data, AI and infrastructure workflows, defined in YAML and run on a server with a web UI.

Content management tool that edits Markdown, YAML and JSON files in a codebase, through the local file system or GitHub.

Open-source collection of React components built with Tailwind CSS, Motion and shadcn/ui, installed into a project as source code.

Open source API gateway, built on NGINX, that routes, secures and transforms traffic to APIs through plugins, with a Kong Konnect SaaS option.

Open-source platform for tracing, evaluating and monitoring LLM applications, sent from application code through SDKs and OpenTelemetry.

Magnolia is a Java digital experience platform for managing and delivering web content, with a Community Edition under GPLv3 and a licensed DX Core.

TypeScript framework for building AI agents and applications.

Open-source headless commerce platform for Node.js with commerce modules, an admin dashboard and REST store and admin APIs.

Open-source headless platform for building multi-vendor marketplaces, built on the Medusa commerce core.

Native graph database server that stores nodes and relationships and is queried with the Cypher language.

Open-source notification infrastructure with one API for sending messages across in-app inbox, email, SMS, push and chat channels, self-hostable or available as a cloud service.

Suite of web-based open source business apps, including a website builder and an e-commerce app.

OpenID Certified OAuth 2.0 and OpenID Connect server that issues tokens and connects to an existing login and consent app.

Shadcn-style HEEx component library for Phoenix LiveView apps, styled with Tailwind CSS and installed from Hex.

PostgreSQL connection pooler, load balancer and database sharder written in Rust.

Process manager for Node.js and Bun applications that keeps them running, with a built-in load balancer.

Product analytics platform with session replay, feature flags, experiments, error tracking and surveys, self-hosted from its code or run as PostHog Cloud.

Vector search engine and vector database, run as a server with a REST and gRPC API, also offered as Qdrant Cloud.

Python library for building full-stack web apps, with the frontend compiled to React and the backend run as a Python server.

Distributed file system and S3-compatible object store, written in Go, shipped as one weed binary.

Services framework for .NET that builds HTTP and message-based web services from typed request DTOs.

Open-source observability platform built on OpenTelemetry that covers logs, metrics, traces, alerts and dashboards.

Open-source commerce platform built on Ruby on Rails, with a REST API, TypeScript SDKs and a Next.js storefront.

WordPress plugin that crawls a WordPress site into a static copy and publishes that copy to static hosting.

Open-core PDF editing and processing platform for self-hosted servers and a hosted service, with a REST API.

Open source user authentication server, Core, with frontend and backend SDKs, self-hosted or as a managed cloud service.

Open-source JavaScript form library that renders JSON-defined forms and surveys in React, Angular, Vue and plain JavaScript applications.

Free and open source HTML dashboard UI kit built on Bootstrap 5, with layouts and components for admin panels and web apps.

Set of free, MIT-licensed SVG icons on a 24x24 grid, published as npm packages for plain HTML and for several frameworks.

Headless rich-text editor framework for web applications, built on ProseMirror.

Open-source low-code platform for building internal tools and dashboards on existing databases and APIs, self-hosted or as ToolJet Cloud.

Open-source user onboarding platform for in-app product tours, checklists and surveys.

Set of web components for business web applications, published by Vaadin as one npm package per component.

Time series database and monitoring solution that stores metrics pushed by applications and agents, with a Prometheus-compatible query API.

Library of framework-agnostic web components with CSS styling, from the team behind Font Awesome.