All Open Source Apps

Open-source ELT platform with 600+ connectors for moving data from any source to warehouses, lakes, and AI agents.

Developer-first error tracking and performance monitoring platform with AI-powered root-cause analysis across 20+ languages and frameworks.

Continuous localization platform that commits translations directly into your version control system with full translator attribution.

Open-source low-code platform to build admin panels, dashboards, and internal tools connected to any database or API.

Build product integrations with AI using 800+ APIs — auth, proxy, and TypeScript functions on production-grade infrastructure.

Build sophisticated chatbots visually, embed them anywhere without iframes, and own your data — fully self-hostable with a modular block system and 30+ integrations.

Unite every major AI model in one self-hosted chat platform with agents, code execution, MCP tools, and enterprise authentication.

An open-source, FHIR-native healthcare platform that gives developers a compliant backend, authentication, a React component library, and serverless bots to build clinical applications in weeks instead of years.

Manage Nginx reverse proxies and free Let's Encrypt SSL through a beautiful web interface — no Nginx expertise required.

Open-source communication infrastructure that connects your products and AI agents to every channel your users live on — Inbox, Email, SMS, Push, Chat, and more.

Open-source backend platform with Auth, Databases, Storage, Functions, Messaging, Realtime, and Sites — deploy via Docker or use Appwrite Cloud.

Visual LLM workflow platform with RAG pipelines, agent capabilities, and model management for building production AI applications.

Open source feature flags, A/B testing, and warehouse-native experimentation that queries your existing data infrastructure—no data movement required.

A lightweight, offline-capable API development ecosystem for testing HTTP, GraphQL, WebSocket, MQTT, and SSE endpoints across web, desktop, and CLI.

Open source AI gateway and Python SDK that gives you one OpenAI-compatible interface to call 100+ LLM providers, with built-in routing, cost tracking, guardrails, and virtual keys.

The open source operating system and SDK that lets developers build one app and run it across smart glasses from Even Realities, Vuzix, Mentra Live, and more.

The open-source, Next.js-native headless CMS that lives inside your /app folder and gives you a full TypeScript backend instantly.

The all-in-one open source product platform combining analytics, session replay, feature flags, error tracking, AI observability, and a built-in data warehouse in a single self-hostable stack.

The open-source LLMOps platform unifying prompt engineering, evaluation, and observability for teams building reliable LLM applications.

Open-source feature flagging, remote config, and A/B/multivariate testing platform for web, mobile, and server-side apps — self-host or use the hosted SaaS.

The superpowered headless CMS for developers built with GraphQL and React

In-context localization platform that lets developers and translators edit app strings directly in the running application, with AI-powered machine translation and framework SDKs for React, Angular, Vue, and Svelte.

The open-source feature management platform that lets you ship code to production and control who sees it — without redeploying.

Fern turns a single OpenAPI, AsyncAPI, or Protobuf definition into type-safe SDKs for nine languages and a hosted API documentation site, all from one CLI and one source of truth.