All Open Source Apps

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

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.

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

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-source omnichannel customer support platform with AI-powered agents, live chat, and self-hosting — a full Intercom and Zendesk alternative.

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

The open-source PDF platform you can run anywhere — edit, convert, sign, and automate PDFs without sending files to external servers.

Open-source reporting platform to build live dashboards from SQL, NoSQL, APIs, and SaaS tools with an AI assistant that creates charts from natural language.

Build unlimited, embeddable forms with no code — powered by AI, logic rules, and real-time analytics

Open-source authentication platform you self-host, giving you complete control over user data with zero vendor lock-in.

A fast, free, and focused Kanban tool from 37signals that strips away corporate bloat to help teams track bugs, issues, and ideas with clarity.

The open-source, self-hosted status page system that keeps your users informed during outages and maintenance windows.

Self-hosted event ticketing platform that keeps your attendee data, brand, and revenue completely under your control.

The world's most popular open-source CMS — now with a built-in AI client SDK, 196 native blocks, and full-site editing for PHP-powered publishing at any scale.

The complete DevOps platform that unifies Git hosting, CI/CD, issue tracking, and security scanning into a single self-hostable application.

The world's most flexible open-source survey platform with 900+ templates, conditional logic, 80+ languages, and full GDPR compliance for any scale.

Unified open-source platform for AI agent orchestration and workflow automation with 180+ connectors, MCP support, and durable execution.

Self-host a full-featured DocuSign alternative with unlimited e-signatures, multi-signer workflows, and cryptographic PDF signing.

Local-first note-taking with graph view, canvas & AI plugins—your Markdown files, zero telemetry, blazing-fast Rust performance.

Self-hostable subscription management and billing platform with Stripe integration, tax automation, configurable workflows, and Twig-based document generation.

The open-source, self-hostable fraud detection and AML compliance engine that gives fintechs full control over their detection rules, data, and investigations.

Instantly ready browser-based IDE that runs full npm dependency resolution and transpilation entirely client-side, with no server needed.

Self-hosted, no-code workflow automation that keeps your data on your own servers—a privacy-first alternative to Zapier with 90+ integrations.