Hand-picked open-source applications you can deploy on your own servers in seconds. No vendor lock-in. You own your data.
⭐ GitHub stars last updated: Aug 2026
The world's most popular CMS. Powering 43% of the web. Full block editor, 60K+ plugins, unmatched ecosystem.
Leading open-source headless CMS. Customizable content types, REST & GraphQL APIs, role-based access.
Next-gen headless CMS for developers. TypeScript-first, self-hosted, with a powerful admin UI and REST/GraphQL.
Modern publishing platform for creators. Built-in memberships, newsletters, and subscriptions. Node.js powered.
Enterprise-grade CMS trusted by governments and Fortune 500s. Highly scalable, multilingual, accessible.
Mature open-source CMS with built-in multilingual support, ACL, and 8K+ extensions. Great for portals.
Headless CMS wrapping any SQL database with a dynamic API and intuitive admin panel. Real-time GraphQL.
Fast, flat-file CMS that runs without a database. Markdown-based, Twig templating, hyper-secure and cheap to host.
Fully-featured open-source CRM. Sales automation, marketing campaigns, customer support, and a powerful workflow engine.
Lightweight, fast CRM with a clean modern UI. Built-in email integration, calendar, VoIP calling, and formula-based automation.
Modern open-source CRM with a Notion-like interface. GraphQL API, real-time collaboration, and a refreshingly clean design.
Part of Odoo's all-in-one business suite. Visual pipeline management, lead scoring, automated actions, and deep ERP integration.
Personal CRM to remember everything about your friends and family. Track relationships, set reminders, log activities, and never forget a detail.
Full open-source ERP with a powerful CRM module. Manufacturing, accounting, HR, and project management — the most comprehensive business suite.
Headless commerce platform. Multi-region, multi-currency. Customizable checkout, admin, and API.
GraphQL-first headless commerce. Modern dashboard, multi-channel, multi-warehouse. Enterprise-ready.
Adobe Commerce (open-source). Enterprise features, massive marketplace, B2B & B2C. 250K+ merchants.
WordPress plugin powering 30%+ of online stores. Extensions for payments, shipping, memberships.
Full-featured eCommerce platform. 300K+ stores, 5K+ modules. Multilingual, multi-currency.
Lightweight, easy-to-use cart. Admin dashboard, 13K+ extensions, multi-store support out of the box.
The world's most advanced open-source relational database. ACID-compliant, JSON support, battle-tested for 30+ years.
The most popular open-source relational database. Powers millions of apps and sites — the classic WordPress companion.
Drop-in MySQL replacement with extra storage engines and performance boosts. Community-driven, default on major distros.
In-memory data store used as cache, queue, and message broker. Sub-millisecond latency with rich data structures.
Leading document database. Flexible schemas, horizontal scaling, and a query language developers love.
Blazing-fast columnar database for analytics. Processes billions of rows per second — the real-time reporting standard.
Purpose-built time-series database for metrics and events. Continuous queries, downsampling, InfluxQL + Flux.
Erlang-based document database with a RESTful JSON API. Multi-master replication and offline-first sync.
Google Analytics alternative with full data ownership. Heatmaps, session recordings, funnels, A/B testing.
Privacy-first, lightweight analytics. No cookies required, GDPR/CCPA compliant by default. Simple dashboards.
Simple, fast, privacy-focused analytics. Self-hosted, no cookies, real-time data. Beautiful minimal dashboard.
Product analytics suite with feature flags, session recordings, heatmaps, A/B testing, and data warehouse.
Open observability platform. Dashboards for metrics, logs, and traces. Connect to 100+ data sources.
Ask questions of your data. No SQL needed. Beautiful dashboards, embedding, and scheduled reports.
Modern data exploration & visualization platform. SQL IDE, rich charting, semantic layer, enterprise-ready.
Simple, privacy-first analytics with no cookies. GDPR, CCPA, PECR compliant out of the box. Beautiful real-time dashboard.
High-performance newsletter & mailing list manager. Single binary, PostgreSQL, beautiful UI. Self-hostable.
Complete mail server for outbound & inbound email. Webhooks, API, click/open tracking. Used by 1000s of senders.
Full mail server suite in Docker. SOGo webmail, spam filtering, calendar, contacts. The complete package.
Marketing automation platform. Email campaigns, lead scoring, landing pages, forms. Like Marketo, but open source.
Self-hosted newsletter app built on Node.js. List management, template editor, click tracking, RSS campaigns.
Modern self-hosted email marketing. Designed for agencies managing multiple clients. Laravel-based.
Most popular open-source workflow automation. 400+ integrations, visual editor, AI agents, self-hosted or cloud.
Build agents that monitor events and take action. Scrape websites, track prices, send alerts — like IFTTT on steroids.
Declarative, event-driven orchestration. Define workflows as YAML. Built for data engineers & DevOps teams.
No-code automation with a clean drag-and-drop UI. Open-source Zapier alternative. Growing fast.
Low-code flow programming for IoT and APIs. Browser-based editor, huge community, 5K+ nodes.
Turn scripts into internal tools & workflows. Python/TypeScript/Go. Auto-generated UIs, webhooks, scheduling.
Feature-rich team communication. Omnichannel, video calls, screen sharing, apps marketplace. Used by 12M+ users.
Enterprise-grade Slack alternative. Threads, channels, playbooks, integrations. HIPAA & FINRA compliant.
Customer engagement platform. Live chat, email, social DMs — all in one inbox. Great for support teams.
Free video conferencing. No account needed, E2E encryption option, screen sharing, recording, live streaming.
Unique topic-based threading. Never lose context. Perfect for open-source communities and remote teams.
Decentralized messaging on Matrix. E2E encrypted, bridges to Slack/Discord/Telegram. Full data sovereignty.
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