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Sealbook / Open source / Self-hosted apps (SaaS alternatives)

Top open-source self-hosted apps (saas alternatives) on GitHub

1,859 repositories with 1,000+ stars, ranked by stars. Leading: excalidraw, immich, Stirling-PDF.

RepositoryStarsLanguageLicenseActivity
1excalidraw/excalidrawVirtual whiteboard for sketching hand-drawn like diagrams★ 134.1kTypeScriptMITActive
2immich-app/immichHigh performance self-hosted photo and video management solution.★ 116.6kTypeScriptAGPL-3.0Active
3Stirling-Tools/Stirling-PDF#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere★ 94.4kTypeScriptOtherActive
4louislam/uptime-kumaA fancy self-hosted monitoring tool★ 92.6kJavaScriptMITActive
5gohugoio/hugoThe world’s fastest framework for building websites.★ 90.2kGoApache-2.0Active
6AppFlowy-IO/AppFlowyBring projects, wikis, and teams together with AI. AppFlowy is the AI collaborative workspace where you achieve more without losing control ★ 77.5kDartAGPL-3.0Active
7grafana/grafanaThe open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Promet★ 77.3kTypeScriptAGPL-3.0Active
8toeverything/AFFiNEThere can be more than Notion and Miro. AFFiNE(pronounced [ə‘fain]) is a next-gen knowledge base that brings planning, sorting and creating ★ 73.6kTypeScriptOtherActive
9strapi/strapi🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first.★ 73.3kTypeScriptOtherActive
10kelseyhightower/nocodeThe best way to write secure and reliable applications. Write nothing; deploy nowhere.★ 65.9kDockerfileApache-2.0Stale
11nocodb/nocodb🔥 🔥 🔥 A Free & Self-hostable Airtable Alternative★ 65.3kTypeScriptOtherActive
12usememos/memosA timeline for your thoughts. Just type. It stays yours.★ 63.9kGoMITActive
13coollabsio/coolifyAn open-source, self-hostable PaaS alternative to Vercel, Heroku & Netlify that lets you easily deploy static sites, databases, full-stack a★ 63.1kPHPApache-2.0Active
14makeplane/plane🔥🔥🔥 Open-source Jira, Linear, Monday, and ClickUp alternative. Plane is a modern project management platform to manage tasks, sprints, docs,★ 61.1kTypeScriptAGPL-3.0Active
15go-gitea/giteaGit with a cup of tea! Painless self-hosted all-in-one software development service, including Git hosting, code review, team collaboration,★ 58.5kGoMITActive
16twentyhq/twentyThe open alternative to Salesforce, designed for AI.★ 58.5kTypeScriptOtherActive
17appwrite/appwriteThe open-source cloud for agents & devs. Including Auth, Databases, Storage, Functions, Messaging, Hosting, Realtime, WAF and more★ 57.7kTypeScriptBSD-3-ClauseActive
18laurent22/joplinJoplin - the privacy-focused note taking app with sync capabilities for Windows, macOS, Linux, Android and iOS.★ 56.8kTypeScriptOtherActive
19TryGhost/GhostIndependent technology for modern publishing, memberships, subscriptions and newsletters.★ 55.6kTypeScriptMITActive
20odoo/odooOdoo. Open Source Apps To Grow Your Business.★ 55.1kPythonOtherActive
21tldraw/tldrawBuild infinite canvas apps in React with the tldraw SDK. World's best, top-most agent recommended #1 five star SDK.★ 51kTypeScriptOtherActive
22ClickHouse/ClickHouseClickHouse® is a real-time analytics database management system★ 50.5kC++Apache-2.0Active
23metabase/metabaseThe easy-to-use open source Business Intelligence and Embedded Analytics tool that lets everyone work with data :bar_chart:★ 49.7kClojureOtherActive
24iamkun/dayjs⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API★ 48.7kJavaScriptMITActive
25gogs/gogsThe painless way to host your own Git service★ 47.9kGoMITActive
26RocketChat/Rocket.ChatThe Secure CommsOS™ for mission-critical operations★ 46.3kTypeScriptOtherActive
27juspay/hyperswitchOpen source, composable payments platform | PCI compliant | SaaS and Self-host options | Enables connectivity to multiple payment, payout, f★ 45.4kRustApache-2.0Active
28payloadcms/payloadPayload is the open-source, fullstack Next.js framework, giving you instant backend superpowers. Get a full TypeScript backend and admin pan★ 45.3kTypeScriptMITActive
29logseq/logseqA privacy-first, open-source platform for knowledge management and collaboration. Download link: http://github.com/logseq/logseq/releases. ★ 45.3kClojureAGPL-3.0Active
30imputnet/cobaltbest way to save what you love★ 45.1kSvelteAGPL-3.0Slowing
31react-hook-form/react-hook-form📋 React Hooks for form state management and validation (Web + React Native)★ 44.9kTypeScriptMITActive
32juanfont/headscaleAn open source, self-hosted implementation of the Tailscale control server★ 44.8kGoBSD-3-ClauseActive
33duckdb/duckdbDuckDB is an analytical in-process SQL database management system★ 42.2kC++MITActive
34ToolJet/ToolJetOpen-source foundation of ToolJet AI - the enterprise app generation platform for internal tools, dashboards, business applications, workflo★ 41.1kHTMLAGPL-3.0Active
35appsmithorg/appsmithPlatform to build admin panels, internal tools, and dashboards. Integrates with 25+ databases and any API.★ 41.1kTypeScriptApache-2.0Active
36outline/outlineThe fastest knowledge base for growing teams. Beautiful, realtime collaborative, feature packed, and markdown compatible.★ 41kTypeScriptOtherActive
37PostHog/posthog:hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session re★ 40.3kPythonOtherActive
38frappe/erpnextFree and Open Source Enterprise Resource Planning (ERP)★ 40.3kPythonGPL-3.0Active
39volcengine/OpenVikingSelf-evolving Context Database for AI Agents. Unify Agent Memory, Knowledge RAG and Skills.★ 40.2kPythonAGPL-3.0Active
40halo-dev/haloHalo 是一款强大易用的开源建站工具，从个人博客、知识库，到企业官网、在线商城，Halo 都能助您轻松实现，一站式满足您的多样化建站需求。★ 39.9kJavaGPL-3.0Active
41umami-software/umamiUmami is a privacy-first analytics platform. Traffic, campaigns, behavior, conversions, and revenue in one place — no cookies, no surveillan★ 39.5kTypeScriptMITActive
42mattermost/mattermostMattermost is an open source platform for secure collaboration across the entire software development lifecycle..★ 39.4kTypeScriptOtherActive
43directus/directusThe flexible backend for all your projects 🐰 Turn your DB into a headless CMS, admin panels, or apps with a custom UI, instant APIs, auth & ★ 38.6kTypeScriptOtherActive
44TriliumNext/TriliumBuild your personal knowledge base with Trilium Notes★ 38.4kTypeScriptAGPL-3.0Active
45glanceapp/glanceA self-hosted dashboard that puts all your feeds in one place★ 37.5kGoAGPL-3.0Active
46IceWhaleTech/CasaOSCasaOS - A simple, easy-to-use, elegant open-source Personal Cloud system.★ 37.3kGoApache-2.0Active
47nextcloud/server☁️ Nextcloud server, a safe home for all your data★ 37.2kPHPAGPL-3.0Active
48medusajs/medusaThe world's most flexible commerce platform for agents and developers★ 36.8kTypeScriptOtherActive
49filebrowser/filebrowserFile Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview and edit your fil★ 35.9kGoApache-2.0Archived
50refinedev/refineA React Framework for building internal tools, admin panels, dashboards & B2B apps with unmatched flexibility.★ 35.9kTypeScriptMITActive