Best Self-Hosted Wiki Software in 2026
Six wiki platforms you can run on your own server, with no vendor deciding what happens to your docs.
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.
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
Based on features, user feedback, and value for money.
| Tool | Starting price | Rating | Best for |
|---|---|---|---|
| BookStack | Free plan | n/a | teams that want the simplest possible setup and a non-technical-friendly writing experi... |
| Wiki.js | Free plan | 4.3(15) | teams that want a contemporary UI and are comfortable running a Node.js and PostgreSQL... |
| Outline | From $6/mo | 4.4(31) | teams that already run S3-compatible storage and an OIDC identity provider and want the... |
| MediaWiki | Free | 4.4(34) | large or public-facing wikis with many editors and a need for detailed revision history |
| DokuWiki | Free plan | 4.2(15) | small teams or solo users who want the simplest possible backup and migration story |
| XWiki | Free | 4.6(38) | organizations that want to build lightweight internal apps and structured data views on... |
teams that want the simplest possible setup and a non-technical-friendly writing experience
BookStack's pricing is exceptionally generous as it is a completely free and open-source platform.
Watch out
Requires self-hosting infrastructure (server, domain)
teams that want a contemporary UI and are comfortable running a Node.js and PostgreSQL stack
The pricing for Wiki.js is exceptionally generous as it is entirely free and open-source.
Watch out
Hosting infrastructure costs
teams that already run S3-compatible storage and an OIDC identity provider and want the best-looking editor
Outline's pricing is incredibly generous, offering a full-featured self-hosted option for free.
Watch out
Cloud tier requires annual commitment for stated price.
large or public-facing wikis with many editors and a need for detailed revision history
MediaWiki's pricing is exceptionally generous, being entirely free.
Watch out
Requires self-hosting infrastructure and maintenance.
small teams or solo users who want the simplest possible backup and migration story
organizations that want to build lightweight internal apps and structured data views on top of their wiki
XWiki's 'Open Source' tier is exceptionally generous, offering a comprehensive suite of features completely free of charge.
Watch out
Self-hosting infrastructure costs
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
Confirm the license actually permits free self-hosting with no seat cap or feature gate, not just a trial period.
Some wikis need MySQL or PostgreSQL plus S3-compatible object storage; DokuWiki needs neither. Match this to what you can actually operate.
An official or well-maintained community Docker Compose file cuts setup from hours to minutes.
Page-level or space-level permissions matter once a wiki has more than one team contributing.
Flat markdown or a straightforward SQL dump beats a proprietary export format when you need to migrate later.
Markdown, rich text, or wiki markup, whichever matches how your team already writes.
Mistakes to Avoid
- ×
Picking the wiki with the nicest editor before checking what infrastructure it needs; Outline's polish comes with an S3 and OIDC requirement that BookStack does not have.
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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.
- ×
Choosing MediaWiki or XWiki for a five-person team's internal docs and then fighting the extra complexity instead of the writing.
- ×
Assuming a project labeled 'community edition' has no feature gate; some tools reserve permissions, SSO, or search to a paid self-hosted tier.
- ×
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.
- →
For a wiki that outlives any one hosting decision, prefer DokuWiki or Wiki.js's Git-sync mode; both let you keep a plain-text copy of every page outside the app's own storage.
- →
Put the database (or, for DokuWiki, the data directory) on a volume with automated snapshots from day one, not after the first scare.
- →
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.