Best Self-Hosted Alternatives to Notion: 8 Open-Source Picks

At a glance

Feature matrix

✓ full · △ partial/paid · ✗ not supported

Pricing

Confirm current pricing on each vendor's site.

Pros & cons

What to look for in a self-hosted Notion alternative

Notion bundles several features that rarely live in one open-source tool. When you evaluate alternatives, weigh these factors:

• Block editor: Drag-and-drop blocks for text, headings, tables, embeds, and toggles — the core Notion writing experience.
• Databases: Structured views such as grids/tables, kanban boards, and calendars. This is where many lighter wikis fall short.
• Hosting model: Most ship a Docker or Docker Compose setup. Check whether you also need a database (PostgreSQL) and object storage (S3-compatible).
• Collaboration & sync: Real-time multiplayer editing versus single-user, and how cross-device sync works (server-based or peer-to-peer).
• Mobile and offline: Native apps and local-first/offline support vary widely.
• License: Fully open source (e.g., AGPL/MIT) versus source-available (e.g., Outline's BSL). Confirm the current license on each project's repository before relying on it.
• Maintenance burden: Self-hosting means you own backups, TLS, and updates.

AppFlowy — the closest all-in-one match

Best for: people who want a true Notion replacement with documents and databases in one app.

AppFlowy is an open-source workspace built with Flutter and Rust. It offers block-based documents alongside databases that can be viewed as a grid, board (kanban), or calendar — the combination that makes it feel closest to Notion. It is local-first, with desktop and mobile apps, and AI features that can use your own model or key.

For self-hosting, the project provides AppFlowy Cloud, a self-hostable backend deployed via Docker Compose that adds sync and collaboration. There is also a managed AppFlowy Cloud with free and paid plans if you prefer not to run servers yourself. The code is open source (AGPL); confirm current license and plan details on the official site.

AFFiNE — documents plus an infinite canvas

Best for: visual thinkers who want docs and a whiteboard in the same tool.

AFFiNE combines a block-based document editor with an edgeless infinite canvas, so the same content can be edited as a page or arranged spatially on a whiteboard. It also includes database-style blocks (table and kanban). Like AppFlowy it is local-first and can be self-hosted with Docker.

If your Notion use leans on visual planning, diagrams, or mixing freeform canvas with structured notes, AFFiNE's canvas is its standout feature. Mobile support and some collaboration features are still maturing, so check the current state on the project's site and repository. An AFFiNE Cloud option exists for managed hosting.

Outline — a polished team wiki

Best for: teams that mainly need a fast, searchable knowledge base.

Outline is a markdown-based team knowledge base with real-time collaborative editing, nested document structure, rich search, and integrations such as Slack. It is less of a database tool and more of a documentation/wiki platform, but it is one of the more polished open options for team docs.

You can self-host Outline with Docker; it expects PostgreSQL, Redis, and an S3-compatible store plus an authentication provider. Outline is source-available under the Business Source License (BSL), which permits free self-hosting for most uses — review the license terms for your situation. A paid hosted version is available from the makers.

Docmost — lightweight, fully open-source docs

Best for: teams wanting a simple, open wiki without the heavier setup.

Docmost is an open-source (AGPL) collaborative documentation and wiki app with spaces, permissions, real-time editing, and diagramming support. It positions itself as an open alternative to Notion and Confluence for team documentation.

It self-hosts via Docker with PostgreSQL and Redis. Docmost is newer than Outline, so feature depth and stability are evolving, but it is genuinely free to self-host and developing quickly. A managed cloud is offered as well.

Anytype — local-first and end-to-end encrypted

Best for: privacy-focused users who want cross-device notes without a central server.

Anytype is an object-based, local-first app with end-to-end encryption. Instead of a traditional server, it syncs through the any-sync protocol, and you can run your own self-hosted sync/backup node for full data ownership. Its object model and relations echo Notion's databases, while keeping data on your devices by default.

Anytype is a good fit if your priority is privacy and offline access rather than browser-based team editing. Self-hosting here means operating a sync node rather than a conventional web app; consult the official docs for the current setup.

SiYuan — block-level power-user tool

Best for: power users who want granular blocks, backlinks, and privacy.

SiYuan is a privacy-first, block-based knowledge tool with markdown editing, bidirectional links, and an attribute/database view. It is local-first and can be self-hosted via Docker so you reach your workspace from any browser. Official end-to-end-encrypted cloud sync is available as a paid subscription, while self-hosting the app itself is free and open source (AGPL).

SiYuan has a denser, more technical interface than Notion, which power users tend to appreciate and casual users may find steep.

TriliumNext — personal hierarchical knowledge base

Best for: individuals building a large, deeply nested personal knowledge base.

TriliumNext (the community-maintained continuation of Trilium Notes) is a hierarchical note app designed for big personal knowledge bases. It supports rich text and code notes, scripting/automation, cloning notes into multiple places, and a self-hosted server you can reach from the web client.

It is single-user focused rather than a real-time team workspace, so think of it as a powerful personal vault rather than a Notion replacement for collaboration. It is open source; confirm the current repository and license terms.

Honorable mentions

Depending on your exact need, these are also worth a look:

• Joplin: Open-source markdown notes with end-to-end encryption; sync via your own server (e.g., Joplin Server or Nextcloud/WebDAV).
• Logseq: Local-first, outliner-style notes with backlinks; popular for networked thought and personal knowledge management.
• BookStack: Simple, structured documentation wiki (books/chapters/pages) that is easy to self-host.
• Wiki.js: A modern, flexible wiki engine with multiple storage and authentication options.
• Nextcloud: If you already run Nextcloud, its Notes and collaborative document apps can cover lighter note-taking needs.

Self-hosting: what to plan for

Running any of these tools yourself trades a subscription fee for operational responsibility. Before you commit, plan for:

• Dependencies: Many require PostgreSQL and Redis, and some need S3-compatible object storage for uploads.
• Backups: Schedule regular database and file backups and test restoring them — your data ownership is only as good as your last backup.
• TLS & access: Put the app behind HTTPS (a reverse proxy such as Nginx or Caddy) and restrict access appropriately.
• Updates: Track new releases for security fixes; pin versions and update deliberately.
• Remote access: Decide whether you expose the app to the internet or keep it on a VPN/private network.

How to choose the right one

Match the tool to your primary job:

• Want the full Notion feel (docs + databases)? Start with AppFlowy.
• Need a whiteboard/canvas too? Try AFFiNE.
• Building a team knowledge base? Compare Outline (polished) and Docmost (fully open, lighter).
• Privacy and offline first? Anytype or SiYuan.
• Large personal vault, solo? TriliumNext.

Because these projects evolve quickly, shortlist two, run them in Docker for a week with real content, and confirm current features, licenses, and pricing on each official site before standardizing on one.