Best Self-Hosted Wiki Software in 2026
BookStack is the easiest self-hosted wiki to stand up and the most forgiving for non-technical editors. Wiki.js is the best modern pick if you want a Node.js stack with real-time collaboration and Git-backed storage. Outline looks the best but needs S3-compatible storage and an OIDC login provider, so it fits teams that already run that infrastructure. MediaWiki is Wikipedia's own engine, built for wikis with thousands of pages and dozens of editors fighting over edit history. DokuWiki needs no database at all, just flat text files, which makes it the simplest thing to back up and migrate. XWiki is the deepest option, an application platform disguised as a wiki, for teams that want structured data and custom apps built on top of pages.
Six wiki platforms you can run on your own server, with no vendor deciding what happens to your docs.
Hosted knowledge base tools disappear when a vendor pivots, raises prices, or gets acquired, and your documentation goes with them. From the 10,000+ tools Toolradar tracks, these are the wiki platforms you can self-host for a knowledge base you fully own: the software runs on your server, your data sits in your database or your filesystem, and nobody can lock you out or change the pricing on your archive.
Every pick below is verified open-source or source-available software with a documented Docker deployment path, checked in August 2026. We confirmed each project's license, its self-hosting requirements (database, storage, RAM), and that the code is still actively maintained. We dropped anything that markets itself as "self-hosted" but is really a closed-source app with a Docker wrapper, and anything where the free self-hosted tier has been quietly cut back to a trial.
Top Picks
Picked by editorial review, informed by G2 and Capterra review volume and rating and by media mentions, the signals behind our category rankings. How we rate
| Tool | Starting price | Rating | Best for |
|---|---|---|---|
| BookStack | Free plan | n/a | teams that want the simplest possible setup and a non-technical-friendly writing experience |
| Wiki.js | Free plan | 4.3 16 reviews | teams that want a contemporary UI and are comfortable running a Node.js and PostgreSQL stack |
| Outline | From $6/mo | 4.4 30 reviews | teams that already run S3-compatible storage and an OIDC identity provider and want the best-looking editor |
| MediaWiki | Free | 4.4 34 reviews | large or public-facing wikis with many editors and a need for detailed revision history |
| DokuWiki | Free plan | 4.2 16 reviews | small teams or solo users who want the simplest possible backup and migration story |
| XWiki | Free | 4.6 38 reviews | organizations that want to build lightweight internal apps and structured data views on top of their wiki |
teams that want the simplest possible setup and a non-technical-friendly writing experience
- Pro: MIT-licensed, fully free with no feature gate on the self-hosted version
- Pro: Official Docker image (linuxserver/docker-bookstack) with a documented Compose file
- Pro: Organizes content into Shelves, Books, Chapters, and Pages, which maps well to team or department docs
- Con: Requires a MySQL or MariaDB database, adding one more service to operate
- Con: Less suited to freeform, deeply cross-linked wikis than MediaWiki-style tools
BookStack's pricing is exceptionally generous as it is a completely free and open-source platform.
teams that want a contemporary UI and are comfortable running a Node.js and PostgreSQL stack
- Pro: Open-source (AGPL) with the full feature set available self-hosted, no paid tier
- Pro: Official Docker image with PostgreSQL, MySQL, or SQLite backends supported
- Pro: Can sync pages to a Git repository, so content is version-controlled outside the app database too
- Con: Development pace has slowed compared to a few years ago; check open issues before committing
- Con: Git-sync mode adds setup complexity most teams do not need on day one
The pricing for Wiki.js is exceptionally generous as it is entirely free and open-source.
teams that already run S3-compatible storage and an OIDC identity provider and want the best-looking editor
- Pro: Self-hosted version is free with no feature restrictions under the BSL license (converts to Apache 2.0 in 2030)
- Pro: Real-time multiplayer editing and a genuinely polished, fast editor
- Pro: Official Docker Compose setup, actively maintained with frequent releases
- Con: Requires S3 or MinIO for file storage and an external OIDC provider for login, no built-in username and password auth
- Con: Needs at least 2 GB of RAM as a baseline, more for larger teams
Outline's pricing is incredibly generous, offering a full-featured self-hosted option for free.
large or public-facing wikis with many editors and a need for detailed revision history
- Pro: GPL-licensed, completely free, no feature is gated behind a paid tier
- Pro: Battle-tested at Wikipedia's scale, so it handles thousands of pages and concurrent editors without strain
- Pro: Enormous extension ecosystem (Visual Editor, Semantic MediaWiki, Cargo) for structured data and custom workflows
- Con: Steeper setup and admin learning curve than BookStack or DokuWiki, wiki markup takes getting used to
- Con: Default look and feel needs a skin and configuration pass to feel modern
MediaWiki's pricing is exceptionally generous, being entirely free.
small teams or solo users who want the simplest possible backup and migration story
- Pro: GPL-licensed and free, with no database to install or maintain, pages are stored as flat text files
- Pro: Backup is just copying a directory, and migration is trivial since there is no SQL dump to manage
- Pro: Lightweight enough to run on very modest hardware, including a Raspberry Pi
- Con: Flat-file storage does not scale well past a few thousand pages or very high edit concurrency
- Con: Default theme looks dated without applying a template
organizations that want to build lightweight internal apps and structured data views on top of their wiki
- Pro: LGPL-licensed, the self-hosted version is free with no functional gating
- Pro: Supports structured data (custom object types, forms, queries) beyond plain wiki pages, closer to a low-code platform
- Pro: Official Docker images for containerized deployment, with PostgreSQL or MySQL backends
- Con: The most complex setup and steepest learning curve of the group, both for admins and editors
- Con: Requires more server resources than BookStack or DokuWiki for a comparable install
XWiki's 'Open Source' tier is exceptionally generous, offering a comprehensive suite of features completely free of charge.
What Is a Self-Hosted Wiki?
A self-hosted wiki is software you install on your own server or VPS, usually via Docker, that gives editors a browser-based interface for writing and linking pages, while all the data (page text, revision history, attachments) lives in a database or filesystem you control. Unlike a hosted knowledge base SaaS, there is no external company with access to your content, no per-seat billing tied to a cloud account, and no risk of losing your docs if a vendor shuts down.
The tradeoff is operational: you own the uptime, the backups, the security patches, and the upgrade path. Most of the tools below run comfortably on a $5 to $20 a month VPS for small to mid-size teams, and all support standard Docker Compose deployment.
Why Self-Hosting Your Wiki Matters
Internal documentation, runbooks, and onboarding docs are some of the most sensitive and most permanent content a team produces. A self-hosted wiki keeps that content on infrastructure you control, which matters for compliance-heavy teams (healthcare, finance, government) that cannot put internal docs on a third-party cloud, and for any team that has watched a SaaS tool get acquired and gutted.
It also removes the seat-based pricing ceiling. A hosted wiki that charges per editor gets expensive fast once a whole company is contributing; a self-hosted wiki has one server cost regardless of how many people log in.
Key Features to Look For
Real license and self-host clause (Essential)
Confirm the license actually permits free self-hosting with no seat cap or feature gate, not just a trial period.
Database and storage requirements (Essential)
Some wikis need MySQL or PostgreSQL plus S3-compatible object storage; DokuWiki needs neither. Match this to what you can actually operate.
Docker deployment path (Essential)
An official or well-maintained community Docker Compose file cuts setup from hours to minutes.
Access control and permissions (Important)
Page-level or space-level permissions matter once a wiki has more than one team contributing.
Backup and export format (Important)
Flat markdown or a straightforward SQL dump beats a proprietary export format when you need to migrate later.
Editor experience (Nice to have)
Markdown, rich text, or wiki markup, whichever matches how your team already writes.
Mistakes to Avoid
- ×
- ×
Skipping backups because the wiki 'is just a Docker container'; the data lives in a database volume or file directory that also needs a backup plan.
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Assuming a project labeled 'community edition' has no feature gate; some tools reserve permissions, SSO, or search to a paid self-hosted tier.
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Not testing the export path before committing years of docs to a platform; a wiki you cannot migrate out of is just a different kind of lock-in.
Expert Tips
- →
Run the Docker Compose file on a throwaway VPS or local machine first and write three real pages before deciding, the editing experience matters more than the feature list.
- →
If your team already has S3-compatible object storage and an identity provider (Okta, Authentik, Keycloak), Outline's requirements stop being a downside.
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Put the database (or, for DokuWiki, the data directory) on a volume with automated snapshots from day one, not after the first scare.
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Start with page-level permissions off and add restrictions only where you actually need them; over-locking a new wiki kills adoption faster than a messy structure does.
The Bottom Line
For most teams, start with BookStack if you want the fastest path to a working wiki, or Wiki.js if you want a more modern stack and are comfortable with PostgreSQL. From the 10,000+ tools Toolradar tracks, these six are the wiki platforms you can actually self-host for a knowledge base you fully own, and MediaWiki remains the right call once your wiki outgrows a single team.
Frequently Asked Questions
What is the best free self-hosted wiki software?
BookStack and DokuWiki are the easiest free self-hosted wikis to get running, both fully open source with no feature gate. BookStack needs a MySQL database and gives you a structured Shelves/Books/Chapters layout; DokuWiki needs no database at all and stores pages as plain text files, which makes backups trivial. Wiki.js is a strong modern alternative if you want a Node.js and PostgreSQL stack instead.
Is Outline free to self-host?
Yes. Outline's self-hosted version is free under its BSL 1.1 license, which converts to Apache 2.0 in January 2030, and there is no feature restriction on the self-hosted install. The catch is infrastructure, not price: Outline requires S3-compatible object storage and an external OIDC login provider, so it fits teams that already run that kind of setup better than a lone developer spinning up a quick wiki.
Which self-hosted wiki is best for large teams or public wikis?
MediaWiki, the same open-source engine that runs Wikipedia, is built for wikis with thousands of pages and many concurrent editors. It handles detailed revision history and edit conflicts at a scale that BookStack or DokuWiki were not designed for. XWiki is the other option for large organizations, particularly if you want structured data and lightweight internal apps built on top of wiki pages, not just documentation.
Do self-hosted wikis need a database?
Most do. BookStack needs MySQL or MariaDB, Wiki.js and Outline support PostgreSQL (Wiki.js also supports MySQL and SQLite), and MediaWiki and XWiki need MySQL or PostgreSQL as well. DokuWiki is the exception: it stores every page as a flat text file on disk and needs no database server at all, which is why it is the simplest option to back up and migrate.
Can I migrate away from a self-hosted wiki later if I change my mind?
It depends on the export format. DokuWiki and Wiki.js's Git-sync mode keep content as plain Markdown or wiki-text files outside the app database, which migrates cleanly to almost anything. BookStack, MediaWiki, Outline, and XWiki store content in their database and offer export tools (PDF, Markdown, or XML dumps for MediaWiki), but a full migration to a different platform still takes real work, so it is worth testing the export path before committing years of documentation.
Cite this page: Toolradar, "Best Self-Hosted Wiki Software in 2026", updated August 2026, https://toolradar.com/guides/best-self-hosted-wiki
Sources
Prices and plan details on this page come from each vendor's own pricing page, re-checked by the Toolradar pricing tracker:
- BookStack pricing, checked
- Wiki.js pricing, checked
- Outline pricing, checked
- MediaWiki pricing, checked
- XWiki pricing, checked
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