Open-source projects built with React

Ollama

A tool for downloading and running open large language models on your own computer or server, with a local REST API.

Excalidraw

A virtual whiteboard for sketching hand-drawn style diagrams, available as a web app and as an embeddable React component.

Immich

A self-hosted photo and video manager with mobile apps that back up media from your phone to your own server.

Supabase

A Postgres-based backend platform that bundles a database, auth, auto-generated APIs, storage, realtime and edge functions, available hosted or self-hosted.

Grafana

A dashboard and visualization tool that queries many data sources such as Prometheus, with a commercial Enterprise edition and a hosted Grafana Cloud.

Apache Superset

An open-source data exploration and visualization platform for building charts and dashboards over SQL databases, run by the Apache Software Foundation.

Strapi

A headless CMS written in JavaScript/TypeScript that you self-host, with a configurable admin panel and REST and GraphQL APIs.

AnythingLLM

An app for chatting with your documents using any LLM and vector database, available as a desktop app or a multi-user Docker server.

Prometheus

A metrics monitoring and alerting system that stores time series locally and is queried with PromQL; a CNCF graduated project.

Penpot

A browser-based design and prototyping tool where designers and developers work on the same files, with SVG as its native format.

Plane

An open-source project and issue tracker with cycles and modules, built as a Jira alternative.

Twenty

A modern open-source CRM you can self-host and extend through its API.

Appwrite

An open-source backend platform with authentication, databases, storage, functions, messaging and hosting, available as managed cloud or self-hosted.

A note-taking app for desktop, mobile and terminal that syncs through your own storage or a Joplin server, with optional end-to-end encryption. The Joplin Server for self-hosted sync is under a separate personal-use license and is not open source.

Ghost

A publishing platform for blogs, newsletters and paid memberships, which you can self-host or use as the managed Ghost(Pro) service.

Metabase

A business intelligence tool where people ask questions of their databases through a query builder or SQL and build dashboards.

Cal.diy

The open-source community edition of Cal.com: a scheduling and booking-page tool you can self-host. It is MIT licensed; Cal.com itself has been closed source since April 2026.

Rocket.Chat

A self-hostable team communications platform with chat, channels, and omnichannel customer messaging.

LibreChat

A self-hosted chat interface that works with many AI model providers, with SSO and agents.

Logseq

A privacy-first, open-source knowledge base and outliner that stores notes locally and links them with [[backlinks]].

Payload

A TypeScript CMS and application framework that runs inside Next.js and generates an admin panel and APIs from one config.

PostHog

A product analytics platform that also includes session replay, feature flags, experiments and surveys, offered as PostHog Cloud or a self-hosted deployment.

Umami

A self-hosted, privacy-focused web analytics tool that works without cookies.

Mattermost

A self-hostable team chat platform with channels, threads and integrations, popular for secure and technical teams.

Portainer

A web UI for managing containers on Docker, Swarm, Podman, Kubernetes and ACI, offered as a free Community Edition and a paid Business Edition.

Medusa

A Node.js commerce platform with a built-in framework for building custom online stores, marketplaces and B2B commerce apps.

Langfuse

An open-source platform for tracing, evaluating and managing prompts for LLM applications.

Jitsi Meet

A browser-based video conferencing server and web app that needs no account to join, which you can run yourself or use through 8x8's hosted services.

Actual Budget

A local-first personal finance and envelope budgeting app that you can self-host, with optional sync across devices.

Plausible Analytics

Lightweight, cookieless, privacy-focused web analytics with a self-hostable Community Edition.

Activepieces

A workflow automation tool with a no-code builder and a TypeScript integration framework, available self-hosted or as a cloud service.

Docmost

An open-source collaborative wiki and documentation tool with real-time editing, spaces, groups and page history.

OpenProject

A web-based project management system for classic, agile and hybrid projects, with Gantt charts, boards, time tracking and a work package model.

Formbricks

An open-source survey and feedback tool for in-product and link surveys that you can self-host.

LimeSurvey

A PHP survey platform with conditional logic, multilingual surveys and a remote-control API, available self-hosted or as a paid cloud service.