Open-source projects built with TanStack Query

Ollama

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

Supabase

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

A PDF editor and processor with many tools that runs in the browser, on the desktop or on your own server.

Prometheus

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

Appwrite

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

Ghost

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

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.

An error and performance monitoring tool for applications that you can run yourself with Docker Compose or use as the hosted sentry.io service.

Umami

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

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.

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.

Formbricks

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

A learning management system developed by Instructure, released under AGPL-3.0 for self-hosting.

Vikunja

A self-hosted to-do and task manager with lists, Kanban, Gantt and table views, shared projects and a full API.

OpnForm

An open-source form builder with a no-code editor, embeds, integrations and a hosted cloud or a Docker self-hosted option.

LimeSurvey

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