All Open Source Apps

Open-source online accounting for small businesses and freelancers — invoices, expenses, and reporting without monthly fees or vendor lock-in.

Your open source window into the Elastic Stack — query, visualize, and act on data stored in Elasticsearch with real-time dashboards, AI-assisted search, and automated alerting.

The world's largest open source marketing automation platform — own your data, run multi-channel campaigns, and escape vendor lock-in forever.

Self-hostable invoicing, time-tracking, and multi-gateway payment platform for freelancers and small businesses, with built-in e-invoicing compliance for EU and global standards.

Privacy-first, self-hosted analytics and customer engagement platform with full data ownership, GDPR compliance, and AI-powered insights across mobile, web, desktop, and IoT.

A developer-first PHP CMS with clean-slate content modeling, auto-generated GraphQL API, and a four-tier edition system that scales from solo projects to enterprise deployments.

Open core, self-hosted team collaboration with chat, AI agents, voice calling, and deep DevOps integrations — all under your control.

The secure, self-hosted team communications platform for organizations that cannot compromise on data sovereignty.

Code when you need it, UI when you don't — the workflow automation platform built for technical teams who refuse to choose.

The 100% MIT-licensed, community-driven scheduling platform — self-host your own booking infrastructure with no enterprise strings attached.

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

Open-source AI + no-code platform that lets coding agents and people collaborate to build business systems fast on proven 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.

Connect any SQL database and get instant REST and GraphQL APIs, a visual management Studio, and a native MCP server for AI agents — free for most organizations.

Build, debug, and deploy knowledge-based AI agents with a visual workflow editor, RAG retrieval, and support for any OpenAI-compatible LLM.

Open-source experience management platform for in-app, website, email, and link surveys — privacy-first and fully self-hostable.

No-code, open-source game engine for building 2D, 3D and multiplayer games — publish to iOS, Android, Steam and the web.

The privacy-first, open-source note-taking app with end-to-end encrypted sync, AI assistance, and a powerful plugin ecosystem across every platform.

The open-source Looker alternative that turns your dbt project's metrics and dimensions into governed, self-serve charts and dashboards — no license key 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 headless CMS that auto-generates REST and GraphQL APIs from your content models, with a fully customizable admin panel you control.

Open-source AI automation platform that converts 280+ workflow integrations into MCP servers for LLMs, with no-code builders and TypeScript extensibility.

Build AI agents, automations, and internal apps on a single open-source platform with full self-hosting control.

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