Open source alternative to Confluence, GitBook, Slab and Notion
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Host a team wiki on Node.js and PostgreSQL, with real-time collaboration, two-way Git sync, and granular path-level permissions.
Teams leaving Confluence for cost or licensing reasons can replicate the core feature set: versioned pages, granular group permissions, structured navigation, and Git sync to keep docs alongside source code.
Skip if your team depends on Confluence-specific integrations like Jira deep-links or Confluence-native macros. Wiki.js has a REST API and webhooks but does not emulate Confluence's proprietary macro ecosystem.
Two-way Git sync means pages stay in plain Markdown files in a repository. Teams that run CI on their docs, want their wiki backed by version control, or need to review documentation changes in pull requests get this natively without a plugin or export step.
Skip if your contributors are non-technical and uncomfortable with Git. The sync is powerful for developers but adds complexity that may confuse contributors who expect a purely GUI editing workflow.
One Wiki.js instance can host separate wikis for separate teams or products, each with its own domain, theme, locale, and auth configuration. Ops, product, and engineering can each have isolated documentation without running separate installations.
Skip if you need strict data isolation at the database level between teams. Multi-site shares one PostgreSQL database; teams with regulatory requirements that mandate separate data stores need separate installations.
Permissions are set per group, per page path pattern, per locale, and per site. A contractor can get read access to /handbook/** and write access to /onboarding/** only, with no access to sensitive paths. This level of control is not standard on most wiki products.
Skip if your access model is simple: everyone reads, a few people write. The permission system is expressive but adds administrative overhead that most small teams with flat structures do not need.
Team wikis in commercial platforms lock documentation behind per-seat pricing that grows with headcount. A team on Confluence or Notion pays every month for access to their own institutional knowledge. When budgets tighten, plans get downgraded, features disappear, or the team outgrows the free tier entirely.
The other pain is control. Commercial wiki platforms own the data format, the hosting, and the roadmap. Git sync, granular page-level permissions, and multi-site hosting for separate sub-teams are either unavailable, behind higher tiers, or on a roadmap that may never ship. Teams that need their docs to stay in Git alongside their code, or need strict access control per department path, hit walls quickly.
Every contributor works in the editor they prefer. The Markdown editor offers live split preview and syntax-aware autocomplete. The visual editor requires no Markdown knowledge. Live Notes allows multiple people to write the same document simultaneously, with a continuous edit history and a publish step when the note is ready.
Pages stay in plain Markdown and sync bidirectionally with any Git repository. Content can also be pushed to local disk or cloud storage on S3, Azure Blob, GCP, or via SFTP. Teams that keep documentation alongside source code get a single source of truth without a separate pipeline.
Full-text search, job queues, and pub/sub events all run through the PostgreSQL instance that backs the wiki. No Elasticsearch, no separate search service, no additional configuration. Boolean search and tag filtering come included.
Access control is set at the group level and scoped to any page path pattern, locale, and site. Ops teams can get write access to /ops/**, while /handbook/** stays read-only for most users. Administrators inherit all permissions; individual grants can be explicit or inherited from parent paths.
A single Wiki.js instance serves multiple independent wikis, each with its own hostname, theme, locales, auth providers, and storage configuration. Teams running documentation for separate products or departments avoid running multiple installations.
Architecture and sequence diagrams render from fenced code blocks using Mermaid, PlantUML, and Kroki. For freehand drawing, Excalidraw boards live directly in pages and support live multi-user collaboration. Both approaches keep diagrams in the page rather than as external file attachments.
Confluence and Wiki.js both serve structured internal documentation with version history, group permissions, and editor tooling. The core difference is infrastructure: Confluence is a managed Atlassian product with per-seat pricing, while Wiki.js runs on your own PostgreSQL-backed server.
| Feature | Wiki.js | Confluence |
|---|---|---|
| License | AGPL-3.0 | Proprietary |
| Self-hosting | Yes | Paid enterprise tier |
| Per-seat cost | None | Per-user monthly fees |
| Git sync | Two-way, built-in | Plugin, not native |
| Full-text search | Built-in (PostgreSQL) | Built-in |
| Granular permissions | Per path, locale, site | Per space and page |
| Multi-site | Yes, one instance | Separate installs |
Wiki.js is the better fit when the team wants to avoid per-seat costs, needs two-way Git sync for docs-as-code, or wants multi-site hosting from a single deployment. Confluence remains the better choice when the team depends on Jira deep integration, Confluence-native macros, or the broader Atlassian ecosystem where the two products share user and permission management.
Notion is a workspace tool that combines notes, databases, and project tracking. Wiki.js is focused on documentation: versioned pages, structured navigation, real-time editing, and access control. The comparison matters for teams choosing between a general-purpose workspace and a dedicated documentation tool.
| Feature | Wiki.js | Notion |
|---|---|---|
| License | AGPL-3.0 | Proprietary |
| Self-hosting | Yes | No |
| Databases / relational tables | No | Yes |
| Git sync | Yes | No |
| Auth: LDAP/SAML | Yes | Paid plans only |
| Multi-site | Yes | No |
| Path-level permissions | Yes | No |
Wiki.js is the better fit for teams that need self-hosting, LDAP/SAML auth, two-way Git sync, or strict path-level access control. Notion fits teams that want a single tool for notes, project tracking, and databases, and are comfortable with managed hosting and per-seat costs.
GitBook and Wiki.js both target documentation teams and both support Git sync. GitBook is a managed SaaS with a free tier for public docs; Wiki.js is self-hosted with no plan tiers.
| Feature | Wiki.js | GitBook |
|---|---|---|
| License | AGPL-3.0 | Proprietary |
| Self-hosting | Yes | No |
| Real-time collaboration | Yes (Live Notes) | Yes |
| Git sync | Two-way | Yes |
| Private wikis | Free (self-hosted) | Paid plans |
| Path-level permissions | Yes | Space-level only |
Wiki.js is the better fit for teams that need fully self-hosted documentation, path-level access control, or private wikis without paying for a managed plan. GitBook is worth considering for public-facing developer docs where its hosted rendering and free public tier remove the need to manage your own server.
Yes. Wiki.js is AGPL-3.0 licensed and free to self-host for any number of users. There are no per-seat fees, no plan tiers, and no feature paywalls. The only costs are your server and the PostgreSQL database it runs on.
Wiki.js uses PostgreSQL as its only external dependency. PostgreSQL handles page storage, full-text search, job queuing, and pub/sub events. SQLite and other databases are not supported. PostgreSQL 17+ is listed as the requirement on the product website.
Yes. Wiki.js supports OIDC (Google, GitHub, and other providers), LDAP, SAML 2.0, and local accounts. Group membership can be mapped automatically on login. SCIM is also supported for automatic account provisioning and deactivation.
Yes. Wiki.js supports two-way Git sync: changes made in the UI push to the repository, and changes committed to the repository pull into the wiki. Content stays in plain Markdown files. Beyond Git, content can be backed up to S3, Azure Blob, GCP, local disk, or SFTP.
Wiki.js covers the core documentation use case of both: versioned pages, structured navigation, real-time editing, granular permissions, and search. The key difference is hosting: Confluence and Notion are managed SaaS products with per-seat pricing. Wiki.js self-hosts on your own infrastructure at no per-user cost, under AGPL-3.0 licensing. The tradeoff is that you manage the deployment and database.
#1 in the Notion guide
Full Notion replacement for small teams
#2 in the Notion guide
Docs, whiteboards, and databases in one workspace
#3 in the Notion guide
Polished team wiki and internal knowledge base
#4 in the Notion guide
Markdown-native docs that agents and teammates edit together
Self-host Wiki.js on a Hostinger VPS
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