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Best Open-Source Confluence Alternatives (2026)

20 self-hostable, open-source projects that replace Confluence — without per-user fees and Atlassian lock-in. Each is scored for how hard it is to self-host, with one-click deploy options where they exist.

Confluence charges per user and locks your documentation inside the Atlassian ecosystem, with macros and storage formats that make a clean export hard. Teams leave to escape rising per-seat fees and to own their wiki data outright.

A warm, inviting workspace featuring coffee, handwritten notes, and a pen on the desk.
Photo by David Bares on Pexels

Our picks at a glance

Easiest to self-host
BookStack

A purpose-built documentation platform with a simple shelf/book/page structure and straightforward Docker or manual install.

Most powerful
AFFiNE

Adds whiteboards and databases on top of docs, the most feature-rich workspace in this list.

Most active
AppFlowy

Leads the list at ~63k stars with active, ongoing development.

Best managed option
Outline

Offers official managed hosting and is designed specifically as a fast, collaborative team knowledge base.

Compare all 20 alternatives

ProjectDeployManagedLicense
AppFlowy
Sponsored
Dart
75k ★
3/5
Moderate
Docker
Docker Compose
AGPL-3.012 days agoRepo
Stirling-PDF
Docker
89k ★
2/5
Easy
Docker
Docker Compose
Apache-2.02 days agoRepo
AFFiNE
TypeScript
71k ★
3/5
Moderate
Docker
Docker Compose
MIT2 days agoRepo
Docusaurus
TypeScript
66k ★
2/5
Easy
Manual
Docker
MIT4 days agoRepo
Outline
TypeScript
40k ★
3/5
Moderate
Docker
Docker Compose
+1
BSL-1.12 days agoRepo
Wiki.js
JavaScript
29k ★
3/5
Moderate
Docker
Docker Compose
+1
AGPL-3.02 days agoRepo
MkDocs Material
Python
27k ★
2/5
Easy
Manual
Docker
MIT13 days agoRepo
Docmost
TypeScript
21k ★
3/5
Moderate
Docker
Docker Compose
AGPL-3.03 days agoRepo
BookStack
PHP
19k ★
3/5
Moderate
Docker
Docker Compose
+1
MIT2 days agoRepo
Overleaf
Ruby
18k ★
4/5
Involved
Docker
Docker Compose
AGPL-3.026 days agoRepo
Docs
K8S
17k ★
4/5
Involved
Kubernetes
Docker Compose
+1
MIT2 days agoRepo
Gollum
Ruby
14k ★
2/5
Easy
Docker
Manual
MIT8 months agoRepo
CryptPad
JavaScript
7.8k ★
3/5
Moderate
Docker
Manual
AGPL-3.05 days agoRepo
HedgeDoc
Docker
7.3k ★
3/5
Moderate
Docker
Docker Compose
+1
AGPL-3.03 days agoRepo
draw.io
Javascript
7.3k ★
2/5
Easy
Docker
Manual
Apache-2.07 days agoRepo
OpenSign
Nodejs
6.8k ★
3/5
Moderate
Docker
Docker Compose
+1
AGPL-3.08 days agoRepo
MediaWiki
PHP
5.1k ★
3/5
Moderate
Docker
Docker Compose
+1
GPL-2.02 days agoRepo
Colanode
K8S
5k ★
4/5
Involved
Docker
Docker Compose
+2
Apache-2.04 months agoRepo
DokuWiki
PHP
4.7k ★
4/5
Involved
Docker
Manual
GPL-2.03 days agoRepo
XWiki
Java
1.3k ★
4/5
Involved
Docker
Manual
LGPL-2.12 days agoRepo

What to look for: Confluence's strength is structured team documentation with permissions and search, so prioritize replacements with solid page hierarchy, full-text search, and access control rather than personal-note tools. Markdown or standard storage formats matter here because they keep your content portable the next time you switch.

Head-to-head:AppFlowy vs ConfluenceStirling-PDF vs ConfluenceAFFiNE vs ConfluenceDocusaurus vs ConfluenceOutline vs Confluence

The alternatives, reviewed

  1. #1
    AppFlowy
    Sponsored
    Self-host: Moderate

    Open-source Notion alternative built on Flutter and Rust

    75k Dart AGPL-3.0 12 days ago
    How it compares to Confluence
    • Self-hosted AppFlowy Cloud setup is involved and less polished than the local desktop app.
    • Fewer database view types and formula capabilities than Notion.
    • Limited third-party integrations and public API.
    • Real-time multiplayer collaboration is newer and less battle-tested.
    RepoDetails & deploy →
  2. #2
    Stirling-PDF
    Self-host: Easy

    Locally hosted web app for merging, splitting, converting, and OCR-ing PDFs

    89k Docker Apache-2.0 2 days ago
    How it compares to Confluence
    • Not a document-management or collaboration tool — purely a PDF processing utility.
    • Advanced features like user auth and SSO require the paid Stirling-PDF Pro license.
    • No document storage or versioning; files must be uploaded and downloaded manually each session.
    • OCR accuracy depends on Tesseract language packs installed in the container.
    RepoDetails & deploy →
  3. #3
    AFFiNE
    Self-host: Moderate

    Privacy-first, local-first workspace combining docs, whiteboards, and databases

    71k TypeScript MIT 2 days ago
    How it compares to Confluence
    • Self-hosted real-time sync (AFFiNE Cloud) has historically lagged the desktop/local experience and can be fiddly to configure.
    • Smaller third-party integration and plugin ecosystem than Notion.
    • Mobile apps are less mature than the desktop client.
    • Some advanced AI and collaboration features are gated to the paid cloud tier.
    RepoDetails & deploy →
  4. #4
    Docusaurus
    Self-host: Easy

    React-powered static site generator optimised for documentation portals

    66k TypeScript MIT 4 days ago
    How it compares to Confluence
    • Static build; no CMS-style in-browser editing for non-developers
    • Versioning system adds complexity for teams not already using Git workflows
    • No built-in search without configuring Algolia DocSearch or a local plugin
    RepoDetails & deploy →
  5. #5
    Outline
    Self-host: Moderate

    Fast, collaborative team knowledge base and wiki

    40k TypeScript BSL-1.1 2 days ago
    How it compares to Confluence
    • Requires an external SSO/OAuth provider for authentication, adding setup friction.
    • No database/table views or relational data like Notion.
    • Licensed under BSL (not fully open source / has usage restrictions).
    • Fewer block types and no whiteboard/canvas features.
    RepoDetails & deploy →
  6. #6
    Wiki.js
    Self-host: Moderate

    Modern, powerful, self-hosted wiki built on Node.js

    29k JavaScript AGPL-3.0 2 days ago
    How it compares to Confluence
    • No real-time collaborative editing.
    • No database/table views or relational content.
    • The long-awaited 3.x rewrite has been slow and partly unstable.
    • Requires a separate database (Postgres/MySQL) to be configured.
    RepoDetails & deploy →
  7. #7
    MkDocs Material
    Self-host: Easy

    Beautiful, feature-rich static documentation site generator from Markdown

    27k Python MIT 13 days ago
    How it compares to Confluence
    • Static output only; no in-browser editing or real-time collaborative authoring
    • Content management requires Git knowledge; non-technical editors cannot contribute easily
    • Insider (paid) tier gates some of the most useful features like social cards and offline search
    RepoDetails & deploy →
  8. #8
    Docmost
    Self-host: Moderate

    Open-source collaborative wiki and documentation software

    21k TypeScript AGPL-3.0 3 days ago
    How it compares to Confluence
    • Younger project with a smaller feature set than Confluence.
    • No database/table views or relational content like Notion.
    • Some enterprise features (SSO/SAML) are gated to a paid edition.
    • Smaller integration and extension ecosystem.
    RepoDetails & deploy →
  9. #9
    BookStack
    Self-host: Moderate

    Simple, self-hosted documentation and wiki platform

    19k PHP MIT 2 days ago
    How it compares to Confluence
    • Fixed Books/Chapters/Pages hierarchy is rigid versus Notion's free-form structure.
    • No real-time collaborative editing.
    • No database/table views or relational content.
    • Plugin/extension ecosystem is minimal.
    RepoDetails & deploy →
  10. #10
    Overleaf
    Self-host: Involved

    Self-hosted collaborative LaTeX editor for academic writing and publishing

    18k Ruby AGPL-3.0 26 days ago
    How it compares to Confluence
    • Track changes and full Git integration are cloud-only (paid) features not available in the Community Edition.
    • No built-in reference manager; requires manual BibTeX or integration with Zotero/Mendeley.
    • Admin panel is minimal; user and quota management requires direct database access.
    • Requires a non-trivial server (2+ CPU, 4 GB RAM) for a comfortable multi-user compile experience.
    RepoDetails & deploy →
  11. #11
    Docs
    Self-host: Involved

    Scalable collaborative wiki and documentation platform by La Suite Numérique

    17k K8S MIT 2 days ago
    How it compares to Confluence
    • Relatively young project; ecosystem of integrations (plugins, API clients) is still maturing.
    • Database and storage setup requires external PostgreSQL and object-storage configuration.
    • No native mobile app; browser-only.
    • Feature parity with Notion (databases, kanban, formulas) is not yet reached.
    RepoDetails & deploy →
  12. #12
    Gollum
    Self-host: Easy

    Simple Git-backed wiki with Markdown support and a local web frontend

    14k Ruby MIT 8 months ago
    How it compares to Confluence
    • No real-time collaboration; concurrent edits require Git merge conflict resolution.
    • Access control is all-or-nothing unless fronted by a reverse proxy with auth.
    • No rich media embeds, databases, or kanban views that modern note tools offer.
    • Search is basic file-content grep; no full-text index for large wikis.
    RepoDetails & deploy →
  13. #13
    CryptPad
    Self-host: Moderate

    Encrypted, real-time collaborative office suite you can self-host

    7.8k JavaScript AGPL-3.0 5 days ago
    How it compares to Confluence
    • Real-time performance degrades noticeably with large documents or many simultaneous editors
    • No native mobile apps; browser-only experience on phones is suboptimal
    • Admin management UI is rudimentary compared to Confluence or Google Workspace admin consoles
    RepoDetails & deploy →
  14. #14
    HedgeDoc
    Self-host: Moderate

    Realtime collaborative Markdown editor and notes platform for teams

    7.3k Docker AGPL-3.0 3 days ago
    How it compares to Confluence
    • Limited to Markdown; no rich block-based editing (tables, databases) like Notion
    • No built-in task management, kanban boards, or project organization features
    • Lacks a hierarchical page tree or wiki-style organization found in Confluence
    • No native mobile apps; browser-only experience on mobile
    RepoDetails & deploy →
  15. #15
    draw.io
    Self-host: Easy

    Powerful open-source diagramming tool for flowcharts, UML, ER, and network diagrams

    7.3k Javascript Apache-2.0 7 days ago
    How it compares to Confluence
    • No real-time multi-cursor collaboration in the self-hosted version (available only on draw.io cloud)
    • Version history and branching are not built-in; rely on external storage integration
    • Limited commenting and review workflow compared to Lucidchart or Miro
    • No presentation mode or interactive slideshow features
    RepoDetails & deploy →
  16. #16
    OpenSign
    Self-host: Moderate

    Open-source document e-signing platform, a self-hosted DocuSign alternative

    6.8k Nodejs AGPL-3.0 8 days ago
    How it compares to Confluence
    • Advanced workflow automation and conditional routing (found in DocuSign) is limited
    • No built-in bulk-send or template library as comprehensive as DocuSign's
    • In-person signing kiosk mode is absent
    • Integrations ecosystem (Salesforce, HubSpot, etc.) is much smaller than DocuSign
    RepoDetails & deploy →
  17. #17
    MediaWiki
    Self-host: Moderate

    The battle-tested wiki engine powering Wikipedia, built for scale

    5.1k PHP GPL-2.0 2 days ago
    How it compares to Confluence
    • Wikitext markup is unfamiliar to most users; modern WYSIWYG editing via VisualEditor requires extra setup
    • No built-in real-time collaboration; concurrent edits require manual conflict resolution
    • No native mobile editor app; mobile experience is read-optimised only
    RepoDetails & deploy →
  18. #18
    Colanode
    Self-host: Involved

    Offline-first team collaboration suite combining chat, rich pages, files, and databases

    5k K8S Apache-2.0 4 months ago
    How it compares to Confluence
    • Project is relatively young; some enterprise features (SSO, audit logs) are incomplete
    • No mobile apps yet; desktop-only client availability limits on-the-go access
    • Smaller plugin/integration ecosystem than Notion or Slack
    • Documentation and community support are still maturing
    RepoDetails & deploy →
  19. #19
    DokuWiki
    Self-host: Involved

    Simple, database-free wiki that stores pages as plain text files

    4.7k PHP GPL-2.0 3 days ago
    How it compares to Confluence
    • Dated wiki-syntax editing experience versus modern block editors.
    • No real-time collaboration.
    • No database/table or relational content.
    • Relies on plugins for many features that are built-in elsewhere.
    RepoDetails & deploy →
  20. #20
    XWiki
    Self-host: Involved

    Enterprise wiki platform with structured data, scripting, and extensibility

    1.3k Java LGPL-2.1 2 days ago
    How it compares to Confluence
    • JVM memory footprint is heavy; needs 1-2 GB RAM minimum for comfortable operation
    • UI feels dated compared to modern Confluence or Notion interfaces
    • Initial setup and Tomcat configuration have a steep learning curve for non-Java admins
    RepoDetails & deploy →

The verdict

For a direct Confluence replacement focused on team documentation, Outline or Docmost give you a modern collaborative wiki, with Outline offering managed hosting if you'd rather not self-host; BookStack is the no-fuss pick when you just want organized docs you control.

Still deciding? Compare AppFlowy vs Stirling-PDF side by side →

Confluence alternatives — frequently asked questions

What's the best open-source Confluence alternative for a team?

Outline and Docmost are the closest fits, both built as collaborative team wikis. Outline offers managed hosting (BSL-1.1 license), and Docmost is AGPL-3.0 and self-hostable via Docker.

Which Confluence alternative is simplest to self-host?

BookStack and Wiki.js are both difficulty 3/5 and ship with Docker, Docker Compose, and manual options. BookStack is especially approachable thanks to its clear book/chapter/page structure.

Is there a self-hosted wiki that doesn't need a database?

Yes, DokuWiki stores pages as plain text files with no database required, which makes backups trivial. The trade-off is a higher setup difficulty (4/5) and a more dated experience than Outline or Docmost.

Can I get real-time collaborative editing like Confluence?

Docmost and Outline are designed around collaborative editing. AFFiNE and AppFlowy also support multi-user workspaces and add databases and whiteboards beyond plain documentation.

Which options offer official managed hosting?

AppFlowy, AFFiNE, Outline, and Docmost all provide a managed/hosted option. Wiki.js, BookStack, and DokuWiki are self-host only.

Will I be locked in again if I pick one of these?

Less so. BookStack, Wiki.js, and DokuWiki store content in portable formats (DokuWiki in plain text files), and the AGPL/MIT-licensed options keep your data on your own servers. Outline is source-available (BSL-1.1) but still self-hostable.

Keep exploring

All Notes & Knowledge Base →Self-hosted directory →Easiest to self-host →
Notion alternativesEvernote alternativesObsidian alternatives