AppFlowy
Open source alternative to Notion — AI-powered workspace for wikis, docs, and projects
AGPL-3.0 · 78.2k stars
Find Open Source Alternatives
Ditch paid software. Discover open source tools that actually work.
80+
Alternatives
25
Categories
2526k+
GitHub Stars Tracked
Featured Projects
Plausible Analytics
Lightweight and privacy-friendly web analytics — no cookies, fully GDPR compliant
AGPL-3.0 · 24.5k stars
Nextcloud
Self-hosted productivity platform with file storage, sharing, collaboration, and more
AGPL-3.0 · 34.5k stars
Jitsi Meet
Open source video conferencing solution that is secure and easy to deploy
Apache-2.0 · 28.9k stars
NocoDB
Open source Airtable alternative — turns any database into a smart spreadsheet
AGPL-3.0 · 62.5k stars
Chatwoot
Open source customer engagement platform — alternative to Intercom for live chat and support
MIT · 28.1k stars
Twenty CRM
Modern open source CRM — a beautiful alternative to Salesforce and HubSpot
AGPL-3.0 · 42.6k stars
Cal.com
Open source scheduling infrastructure — the Calendly alternative for individuals and teams
AGPL-3.0 · 40.8k stars
Docmost
Open source collaborative wiki and documentation software — Notion and Confluence alternative
AGPL-3.0 · 19.6k stars
Plane
Open source project tracking tool — alternative to Jira and Linear with issues, cycles, and modules
AGPL-3.0 · 47.1k stars
Hoppscotch
Open source API development ecosystem — lightweight Postman alternative with real-time collaboration
MIT · 78.7k stars
Infisical
Open source secret management platform — alternative to HashiCorp Vault for teams
MIT · 25.6k stars
Appwrite
Open source backend platform with auth, databases, storage, functions, and messaging
BSD-3-Clause · 55.3k stars
Supabase
Open source Firebase alternative with Postgres database, auth, storage, edge functions, and realtime
Apache-2.0 · 99.8k stars
Formbricks
Open source survey and forms platform — Typeform alternative with in-app surveys and targeting
AGPL-3.0 · 12k stars
Trigger.dev
Open source background jobs framework — Zapier alternative for developers with code-first workflows
Apache-2.0 · 14.3k stars
Lago
Open source metering and usage-based billing platform — alternative to Stripe Billing
AGPL-3.0 · 9.5k stars
OpenStatus
Open source monitoring and status page platform — alternative to Better Stack and Betterstack
AGPL-3.0 · 8.5k stars
Dub
Open source link management platform — Bitly alternative with analytics, branded links, and QR codes
AGPL-3.0 · 23.3k stars
Documenso
Open source document signing platform — DocuSign alternative with a beautiful signing experience
AGPL-3.0 · 12.6k stars
Rocket.Chat
Open source team communication platform — Slack alternative with channels, DMs, video calls, and federation
MIT · 45k stars
Focalboard
Open source project management tool — Trello/Monday alternative with kanban, table, and calendar views
AGPL-3.0 · 26k stars
Outline
Beautiful wiki and knowledge base for teams — Notion/Confluence alternative with real-time collaboration
BSD-3-Clause · 37.8k stars
BookStack
Simple, self-hosted wiki platform — Confluence alternative organized by books, chapters, and pages
MIT · 18.5k stars
Wiki.js
Powerful open source wiki engine with visual editor, Git sync, and dozens of auth providers
AGPL-3.0 · 28.1k stars
Syncthing
Continuous peer-to-peer file synchronization — decentralized Dropbox alternative with no cloud dependency
MPL-2.0 · 81.2k stars
Baserow
Open source no-code database — Airtable alternative with tables, forms, and automations
MIT · 4.5k stars
Umami
Simple, fast, privacy-focused web analytics — Google Analytics alternative that respects user privacy
MIT · 35.9k stars
n8n
Fair-code workflow automation tool — Zapier alternative with 400+ integrations and visual editor
Sustainable Use License · 182k stars
Bruno
Fast, Git-friendly API client — Postman alternative that stores collections in your filesystem
MIT · 42.4k stars
Continue
Open source AI code assistant — GitHub Copilot alternative that works with any LLM in VS Code and JetBrains
Apache-2.0 · 32.1k stars
Tabby
Self-hosted AI coding assistant — GitHub Copilot alternative with local models and privacy
Apache-2.0 · 33.2k stars
PocketBase
Open source backend in a single binary — Firebase alternative with auth, database, file storage, and admin UI
MIT · 57.2k stars
Uptime Kuma
Self-hosted monitoring tool — fancy uptime monitoring with status pages, notifications, and Docker support
MIT · 84.6k stars
Grafana
Open source observability platform — Datadog alternative for metrics, logs, and traces visualization
AGPL-3.0 · 72.8k stars
Discourse
Open source community discussion platform — modern forum with categories, trust levels, and rich integrations
GPL-2.0 · 46.6k stars
Keycloak
Open source identity and access management — Auth0 alternative with SSO, LDAP, and social login
Apache-2.0 · 33.6k stars
Authentik
Open source identity provider — Auth0 alternative with modern UI, flows, and application proxy
MIT · 20.7k stars
Meilisearch
Lightning-fast open source search engine — Algolia alternative with typo tolerance and faceted search
MIT · 56.8k stars
Typesense
Fast, typo-tolerant search engine — Algolia alternative optimized for instant search-as-you-type
GPL-3.0 · 25.5k stars
Bitwarden
Open source password manager — 1Password alternative with browser extensions, mobile apps, and team vaults
AGPL-3.0 · 18.3k stars
Vaultwarden
Lightweight Bitwarden-compatible server in Rust — lightweight 1Password alternative for self-hosting
AGPL-3.0 · 57.5k stars
Medusa
Open source headless commerce engine — Shopify alternative for developers with modular architecture
MIT · 32.5k stars
Saleor
Open source headless commerce platform — Shopify alternative with GraphQL API and multi-channel support
BSD-3-Clause · 22.7k stars
Highlight.io
Open source full-stack monitoring — Sentry alternative with error tracking, session replay, and logging
Apache-2.0 · 9.2k stars
Coolify
Open source Heroku/Vercel alternative — self-hosted PaaS for deploying apps, databases, and services
Apache-2.0 · 52.3k stars
Dokku
The smallest PaaS implementation — Heroku alternative powered by Docker with git push deployment
MIT · 31.9k stars
Metabase
Open source business intelligence tool — Power BI alternative with SQL and no-code query builder
AGPL-3.0 · 46.7k stars
Apache Superset
Modern data exploration and visualization platform — Power BI alternative with rich charts and dashboards
Apache-2.0 · 71.6k stars
Top Projects
n8n
Fair-code workflow automation tool — Zapier alternative with 400+ integrations and visual editor
Sustainable Use License · 182k stars
Supabase
Open source Firebase alternative with Postgres database, auth, storage, edge functions, and realtime
Apache-2.0 · 99.8k stars
Uptime Kuma
Self-hosted monitoring tool — fancy uptime monitoring with status pages, notifications, and Docker support
MIT · 84.6k stars
Syncthing
Continuous peer-to-peer file synchronization — decentralized Dropbox alternative with no cloud dependency
MPL-2.0 · 81.2k stars
Hoppscotch
Open source API development ecosystem — lightweight Postman alternative with real-time collaboration
MIT · 78.7k stars
Browse by Category
📋
Project Management
8 open source · 6 proprietary
📝
Note-Taking
5 open source · 2 proprietary
🎨
Design
2 open source · 2 proprietary
💬
Communication
4 open source · 2 proprietary
📊
Analytics
3 open source · 1 proprietary
👥
CRM
6 open source · 4 proprietary
📧
Email Marketing
2 open source · 1 proprietary
☁️
Cloud Storage
3 open source · 1 proprietary
📅
Scheduling
2 open source · 2 proprietary
💻
Developer Tools
4 open source · 3 proprietary
🖥️
Backend-as-a-Service
3 open source · 1 proprietary
📋
Forms & Surveys
2 open source · 1 proprietary
⚡
Automation
3 open source · 1 proprietary
💳
Billing
2 open source · 1 proprietary
📈
Monitoring
3 open source · 2 proprietary
🔗
Link Management
3 open source · 1 proprietary
📄
Documents
3 open source · 2 proprietary
🌐
Community
2 open source · 1 proprietary
🛡️
Authentication
3 open source · 1 proprietary
🔍
Search
2 open source · 1 proprietary
🔑
Password Management
2 open source · 1 proprietary
🛒
E-Commerce
2 open source · 1 proprietary
🐛
Error Tracking
2 open source · 1 proprietary
🚀
Hosting & Deployment
2 open source · 2 proprietary
📊
Business Intelligence
2 open source · 1 proprietary
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