Best Open Source Alternatives to Notion in 2026
Notion Is Getting Expensive
Notion's Plus plan costs $10/user/month (billed annually). Business runs $18/user/month annual, $20 monthly. Enterprise is custom pricing with sales calls.
For a 20-person team, that's $2,400 to $4,320 per year — just for a workspace tool. And you still don't own your data. There's no self-hosting option, no on-premises deployment, no way to keep sensitive documents off Notion's servers.
On non-Enterprise plans, Notion's LLM providers can retain your data for up to 30 days. Enterprise gets zero data retention with LLM providers — but you'll pay enterprise pricing for the privilege.
Open source alternatives give you the same core features — documents, databases, kanban boards, wikis — with full control over where your data lives. Here are the best options in 2026.
TL;DR
AppFlowy is the best overall Notion replacement with offline-first native apps, documents, and databases. For teams that need production-ready stability right now, Outline is the most mature option (document-focused, no inline databases). If you live in visual workflows and whiteboards, look at AFFiNE.
Key Takeaways
- AppFlowy (67K+ stars) is the closest to a full Notion clone — docs, databases, kanban, calendar views — but self-hosting requires 5+ Docker services.
- AFFiNE (62K+ stars) combines docs, whiteboards, and kanban in one tool with real-time collaboration.
- Outline is the most production-ready for teams — stable, clean API, robust auth — but it's a wiki, not a Notion clone.
- Docmost is the lightweight option for small teams who just need a wiki with spaces and permissions.
- AnyType offers local-first, end-to-end encrypted knowledge management but has mandatory telemetry by default.
- Self-hosting saves money at 15-20+ users, but factor in the maintenance overhead realistically.
- None of these tools fully replicate Notion's all-in-one experience yet. Pick the one that covers your most critical use case.
Quick Comparison
| Tool | GitHub Stars | Self-Hosting Complexity | Databases | Collaboration | Offline | License |
|---|---|---|---|---|---|---|
| AppFlowy | 67,884 | High (5+ services) | Yes | Yes | Yes | AGPL-3.0 |
| AFFiNE | 62,485 | Medium (3+ services) | Kanban only | Real-time | Yes | MIT |
| Outline | 29K+ | Low-Medium (3 services) | No | Real-time | No | BSL 1.1 |
| Docmost | 8K+ | Low (2-3 services) | No | Yes | No | AGPL-3.0 |
| AnyType | 24K+ | N/A (local-first) | Object-based | Sync-based | Yes | Custom |
| Joplin | 47K+ | Low (optional sync) | No | No | Yes | AGPL-3.0 |
AppFlowy — Best Overall Notion Replacement
AppFlowy is the tool that looks and feels most like Notion. You get documents with rich text editing, databases with multiple views (table, kanban, calendar, grid), and a navigation structure that Notion users will immediately recognize.
What It Does Well
The offline-first architecture is AppFlowy's biggest advantage. The native apps (built with Flutter and Rust) run fast and work without an internet connection. Your data syncs when you're back online.
The database features are the most complete of any open source Notion alternative. Relational databases with kanban boards, calendar views, grid views, filters, sorts, and grouping all work as expected.
Self-Hosting Requirements
This is where AppFlowy gets complicated. A full self-hosted deployment requires:
- AppFlowy Cloud API server — the backend service
- GoTrue — authentication service
- PostgreSQL — primary database
- Redis — caching and session management
- MinIO — object storage for file uploads
That's 5+ Docker services to manage, configure, and keep updated. The official Docker Compose file exists but expects significant configuration for auth providers, storage buckets, and service interconnections.
Limitations
AppFlowy is growing fast but isn't fully production-ready for large teams yet. Documentation has gaps, multi-user sync can be rough at scale, and the plugin ecosystem is limited compared to Notion's marketplace. The web app also trails behind the native desktop apps in feature parity.
Best for: Teams who want the closest Notion experience and are comfortable with a complex self-hosting setup.
AFFiNE — Best for Visual and Whiteboard Workflows
AFFiNE blends documents, whiteboards, and kanban boards into a single tool. Think Notion + Miro in one interface.
What It Does Well
The whiteboard integration is what sets AFFiNE apart. Drag document blocks onto a canvas, draw connections between ideas, sketch diagrams, then switch back to a structured document view. The "edgeless mode" (whiteboard) and "page mode" (document) let you flip between structured and freeform work naturally.
Real-time collaboration works well — cursor presence, instant syncing, and smooth editing across multiple users.
Self-Hosting Requirements
AFFiNE's self-hosted stack is more manageable than AppFlowy's:
- AFFiNE server — the main application
- PostgreSQL — database
- Redis — caching
Three core services, which is reasonable. However, self-hosting documentation is less mature than some competitors. You'll likely need to dig into GitHub issues and community forums for deployment guidance.
Limitations
The kanban/database features are less developed than AppFlowy's. If inline databases are your primary Notion use case, AFFiNE may feel incomplete. Self-hosting documentation is the weakest point — the managed AFFiNE Cloud works well, but running your own instance takes effort.
Best for: Teams that need whiteboard and document workflows in one tool — especially design, product, and strategy teams.
Outline — Most Production-Ready for Teams
Outline is the boring, reliable choice — and that's a compliment. While AppFlowy and AFFiNE are building toward a Notion-like vision, Outline has already delivered a polished, stable knowledge base that teams depend on in production.
What It Does Well
Stability and polish. The editor is clean, Markdown-based, and fast. Search works well. The API is comprehensive and well-documented.
Authentication is where Outline stands out. It supports Google, Slack, Azure AD, and generic OIDC out of the box. You get proper user management, permissions, and team structures. Nested document organization, collections, sharing controls, version history, and templates are all enterprise-ready.
Self-Hosting Requirements
Outline is one of the easier tools to self-host:
- Outline app — the main application (Node.js)
- PostgreSQL — database
- Redis — caching and background jobs
Three services, good documentation, and a well-maintained Docker image. The catch: Outline requires an external authentication provider — no local username/password accounts. You need Google Workspace, Slack, Azure AD, or another OIDC provider configured before anyone can log in. For teams already using one of these, it's a non-issue. For small teams without an existing identity provider, it's an annoying hurdle.
Limitations
Outline is a document-focused wiki. There are no inline databases, no kanban boards, no calendar views, no spreadsheet-style tables. If you use Notion primarily for its database features, Outline is not a replacement — it's a replacement for Notion's document and wiki functionality only.
The license is BSL 1.1 (Business Source License), not a traditional open source license. It converts to Apache 2.0 after three years, but the production use restrictions may matter depending on your situation.
Best for: Teams that need a stable, production-ready knowledge base with proper auth integration — and don't need Notion's database features.
Docmost — Lightweight Wiki Alternative
Docmost is what you reach for when Outline feels like too much and you just want a simple, functional wiki for your team. It covers the essentials — spaces, pages, comments, permissions, user groups — without the complexity of larger alternatives.
What It Does Well
Simplicity is the feature. The editor is clean, the interface is straightforward, and deployment is minimal. You get nested pages organized into spaces (similar to Confluence's space concept), inline comments for feedback, and granular permissions to control who sees what.
For small teams that need shared documentation — internal wikis, onboarding guides, process docs, meeting notes — Docmost handles it without the overhead. The learning curve is close to zero.
Self-Hosting Requirements
Docmost has one of the lightest deployment footprints:
- Docmost app — the main service
- PostgreSQL — database
- Optional: Redis (for caching at scale)
For a small team, you can run this on a basic VPS with minimal resources. Setup is straightforward with Docker Compose.
Limitations
Docmost is young. The feature set is growing, but it lacks the maturity, integrations, and ecosystem of Outline. There's no API as comprehensive as Outline's, fewer auth provider options, and less community support. It's a solid wiki, but if you need extensibility or integrations with your existing stack, you may outgrow it.
Best for: Small teams (under 20 people) who want a dead-simple self-hosted wiki without the complexity of Outline or Confluence.
AnyType — Local-First, Privacy-Focused
AnyType takes the opposite approach from every other tool on this list. Instead of a server-based architecture, it's local-first. Your data lives on your device, encrypted end-to-end. Sync happens peer-to-peer through AnyType's network, not through a central server you have to manage.
What It Does Well
End-to-end encryption means nobody — not even AnyType's own infrastructure — can read your data. The knowledge management model is graph-based: instead of pages in folders, you create objects (notes, tasks, bookmarks) and link them together, closer to Obsidian than Notion. Relations between objects let you build custom types and views. Desktop and mobile apps work fully offline.
Limitations
The mandatory telemetry by default is an odd choice for a privacy-focused tool. You can disable it, but it's on by default — which undermines the privacy messaging.
AnyType isn't designed for team collaboration in the way Notion is. It's better suited for personal knowledge management or small groups. The graph-based model has a learning curve — users coming from Notion's page-and-database structure will need time to adapt.
There's no traditional self-hosting. You either use AnyType's sync network or keep everything purely local. This is simpler than managing a server, but you also have less control over the sync infrastructure.
Best for: Privacy-conscious individuals who want a local-first knowledge management tool with E2E encryption.
Joplin — Best for Personal Note-Taking
Joplin isn't trying to be Notion. It's a note-taking app — plain text, Markdown, local storage, full encryption support. But it's worth including because a significant number of Notion users are really just using it for personal notes, and Joplin does that better.
What It Does Well
Joplin handles Markdown notes with tags, notebooks, and full-text search. It supports end-to-end encryption, file attachments, and to-do lists. Sync options are flexible — Nextcloud, Dropbox, OneDrive, S3, or your own WebDAV server. Files are stored in an open format. The plugin ecosystem is healthy, and the web clipper extension is excellent for saving web pages.
Limitations
Joplin is not a Notion replacement for teams. No databases, no kanban boards, no real-time collaboration, no shared workspaces. It's a personal note-taking tool that syncs across devices. The UI is functional but not polished — if Notion's design is part of why you use it, Joplin may feel like a step backward.
Best for: Individuals who use Notion primarily for personal notes and want a free, open source, privacy-respecting alternative.
How to Choose
"I need the closest thing to Notion" — Start with AppFlowy. It has documents, databases, kanban, and calendar views. Be ready for a more involved self-hosting setup.
"I need whiteboards and docs in one tool" — AFFiNE is the only option here that combines freeform canvas with structured documents.
"I need something stable for my team right now" — Outline. It's the most mature, with the best auth integration and cleanest deployment. Accept that it's a wiki, not a full Notion clone.
"I just need a simple wiki" — Docmost gets you running fast with minimal infrastructure.
"Privacy is my top priority" — AnyType with E2E encryption and local-first storage. Disable the default telemetry.
"I just take personal notes" — Joplin. Free, open source, syncs everywhere, stores everything in Markdown.
Cost Comparison: Notion vs Self-Hosting
For a 20-person team, Notion costs $2,400-$4,320/year depending on your plan. Here's what self-hosting looks like.
Notion (20 Users)
| Plan | Annual Cost |
|---|---|
| Plus ($10/user/month) | $2,400 |
| Business ($18/user/month) | $4,320 |
| Enterprise | Custom (typically higher) |
Self-Hosting (20 Users)
| Cost | Annual Estimate |
|---|---|
| VPS (4GB RAM, 2 vCPU) | $240-$480 |
| Admin time (2-4 hrs/month at $75/hr) | $1,800-$3,600 |
| Backup storage | $60-$120 |
| Domain + SSL (Caddy/Let's Encrypt) | $12-$20 |
| Total | $2,112-$4,220 |
The raw server costs are dramatically lower. A $20-$40/month VPS can run AppFlowy, Outline, or AFFiNE for 20 users comfortably. The real cost is admin time — patching, monitoring, troubleshooting, and handling the occasional outage.
If you already have DevOps capability on your team, self-hosting saves money starting around 15-20 users. If you'd need to hire or dedicate someone to manage it, the math is less clear until you're past 50+ users.
The non-monetary benefit is harder to quantify but real: your data stays on your infrastructure, you control retention policies, and you're not subject to vendor pricing changes.
Methodology
We evaluated these tools based on:
- Feature parity with Notion — Documents, databases, collaboration, and organizational features.
- Self-hosting viability — Docker availability, documentation quality, number of required services, and real-world deployment complexity.
- Community health — GitHub stars, commit frequency, issue responsiveness, and contributor count as of March 2026.
- Production readiness — Stability, auth integration, API quality, and suitability for team use.
- Privacy and data ownership — Encryption options, telemetry defaults, and data portability.
We did not accept payment or sponsorship from any project listed. Tools were tested via self-hosted Docker deployments where available.
Find Your Alternative
Every team's requirements are different. The best Notion alternative for you depends on whether you need full database features, whiteboard collaboration, enterprise auth, or just a solid wiki.
Browse all Notion alternatives on OSSAlt to see detailed feature comparisons, deployment guides, and community reviews — and find the right fit for your team.