If you’re choosing a self-hosted knowledge base, two strong options are Outline and Docmost. Both are modern, clean, and Markdown-friendly—but they differ in ways that matter depending on how you work.
Here’s a practical comparison based on actual usage.
Outline vs. Docmost
Authentication
This is one of the biggest operational differences.
-
Outline requires an external identity provider (Slack, Google, OIDC, etc.). This is flexible and production-ready, but adds setup overhead.
-
Docmost includes built-in authentication, allowing you to get started without external services. However, SSO/OIDC support is only available on paid licenses.
If you’re running a homelab or small team setup, Docmost is simpler. For environments that require SSO or centralized identity management, Outline is more accessible since it supports OIDC even on free self-hosted installs.
API and automation
-
Outline provides a well-documented API (GraphQL) and supports webhooks, even on free self-hosted installs. It’s suitable for automation, integrations, and event-driven workflows.
-
Docmost provides API access with documentation, but this is limited to paid licenses and does not currently include webhook support.
If automation and event-driven integrations are a priority, Outline is clearly ahead.
Public sharing and access control
Both tools support public sharing, but with limitations and differences in granularity.
| Feature | Outline | Docmost |
|---|---|---|
| Public sharing scope | Collection level down to individual pages | Page/document level (no workspace-level public sharing) |
| Password protection for public links | Not supported | Not supported |
| Internal sharing (same instance) | Collection, page, and subpage level | Workspace level only |
Public links can be generated in both tools, but neither supports adding a password layer, which would be useful for client-facing documents.
For internal collaboration, Outline offers more granular control by allowing sharing at the collection, page, and subpage level. In contrast, Docmost limits sharing to the workspace level, with no page-level permission control.
Diagram support (Draw.io / diagrams.net / Excalidraw)
| Feature | Outline | Docmost |
|---|---|---|
| diagrams.net (Draw.io) | Supported via / command, opens external editor and syncs back |
Supported with similar workflow |
| Excalidraw | Not supported natively | Built-in, can create and edit inline |
If you rely heavily on lightweight, embedded diagrams (especially Excalidraw), Docmost has an edge.
Date insertion
Using /date in both tools inserts a formatted date, but the output differs:
- Outline:
28 June 2025 - Docmost:
June 28, 2025
Neither tool currently allows customizing this format. This comes down to preference, but Docmost’s format may feel more natural if you’re used to US-style dates.
Final thoughts
-
Choose Outline if you need:
- Strong API and automation (including webhooks)
- More granular access control and sharing
- Integration with existing identity providers (OIDC, Slack, etc.) without licensing restrictions
- A more mature and extensible ecosystem
-
Choose Docmost if you want:
- Faster setup with built-in authentication
- Native Excalidraw support
- A simpler, more self-contained stack
If you’re willing to spend time setting up OIDC or an external identity provider, Outline is the more capable long-term solution, especially for automation, structured collaboration, and SSO without additional licensing.
Docmost is a solid option for simpler setups, but trades off flexibility and advanced features (like SSO and webhooks) behind paid tiers.
This post was drafted with the help of AI, based on my own notes and verification. All comparisons and conclusions reflect my actual usage and assessment.