In short. Docmost is the most open self-hosted option among the credible confluence alternatives — AGPL license, built-in email/password auth, a lightweight stack. Outline is more polished but requires an external SSO provider even for self-hosted use. Notion isn’t self-hostable at all — it’s SaaS only, full stop. If keeping wiki software on your own infrastructure matters, the real choice is between Docmost and Outline, and it usually comes down to SSO requirements and how much maturity you need on day one.
Docmost vs Outline vs Notion: Quick Comparison
The same tradeoff that shows up in notion vs confluence generally — flexible SaaS workspace versus structured, ownable wiki software — plays out again once Outline enters the picture. Here’s how the three stack up side by side:
| Dimension | Docmost | Outline | Notion |
|---|---|---|---|
| License | AGPL-3.0 (open source) | BSL 1.1 (source-available) | Proprietary, closed source |
| Self-hosted option | Yes — official Docker Compose | Yes, for internal use — official Docker Compose | No — SaaS only |
| Auth | Built-in email/password; SSO on paid tier | No built-in email/password — requires Google, Slack, or an OIDC/SAML provider | Notion’s own login; SSO on Enterprise plan |
| Real-time editing | Yes | Yes | Yes (cloud only) |
| Storage backend | PostgreSQL + Redis; S3 optional | PostgreSQL + Redis; S3-compatible storage required for uploads | Notion’s own cloud infrastructure |
| GitHub stars | ~21k | ~38k | N/A — closed source |
| Maturity | Newer (2026), fast-moving | Mature, long production track record | Mature SaaS product |
| Best for | Small teams that want a clean self-hosted wiki without mandatory SSO | Larger orgs with an existing identity provider that want a polished, battle-tested editor | Personal use or teams fine with data leaving their infrastructure |
Docmost: Open Source, Simpler Stack
Docmost has passed 20,000 GitHub stars, is licensed under AGPL-3.0 — a real, OSI-recognized open-source license, unlike Outline’s source-available BSL — and ships with built-in email-and-password login, so there’s no identity provider to stand up before your first page gets written. The stack is PostgreSQL for storage and Redis for real-time collaboration and background jobs. On top of that: spaces, nested pages, granular permissions, page history, Draw.io/Excalidraw/Mermaid diagrams, and S3-compatible storage for attachments. Built-in importers pull existing content over from Confluence or Notion exports, so switching doesn’t mean starting from a blank wiki.
It’s newer than Outline and moving fast, which cuts both ways — frequent improvements and an active issue tracker, but a shorter production track record than a project that’s been running in enterprise environments for years. Enterprise SSO, advanced permissions, and AI features sit behind a paid Business/Enterprise tier if you need them later, but the free AGPL edition already covers what most small-to-medium teams need. It’s the best fit for teams who want a clean, self-hosted, open source confluence alternative without an SSO dependency on day one.
Outline Wiki: Mature, SSO-Required
Outline wiki has around 38,000 GitHub stars and a much longer production history than Docmost. It ships under the Business Source License (BSL 1.1) rather than a traditional open-source license — self-hosting for your own team is fully permitted and free, but the license restricts offering Outline as a competing hosted service, and it only converts to a permissive license after a set date per release. That distinction matters most for organizations with open-source-first procurement policies (government agencies, some enterprises); everyone else can mostly treat it as a detail rather than a blocker.
The editor is polished, the API is mature, and the integration ecosystem (Slack, Figma, Loom, and 20+ others) is deep — this is the project’s real strength, and years of production use show in the details. The catch that trips people up on day one: Outline has no built-in email/password login at all. Every sign-in goes through an external identity provider — Google, Slack, or a generic OIDC/SAML service like Keycloak or Authentik — and it also expects S3-compatible storage configured before file uploads work. That’s real setup complexity for a small team that doesn’t already run an identity provider, even though the payoff is a genuinely refined product once it’s running. Outline also offers a commercial hosted cloud version for teams that decide self-hosting isn’t worth the operational overhead after all.
Notion: No Self-Hosting, Full SaaS
Notion has no self-hosted option, and that’s the whole story for teams that need data on their own infrastructure — it’s ruled out immediately, regardless of price or features. It remains strong for personal use and small teams that don’t mind data living on Notion’s servers, with a flexible database-and-page model that neither Docmost nor Outline tries to replicate. Pricing runs on a per-seat SaaS model that scales with headcount, which is exactly the ongoing cost both Docmost and Outline let you sidestep in exchange for running your own infrastructure.
For EU/GDPR teams or anyone who needs on-prem or self-hosted deployment, the two credible self-hosted Notion alternatives are Docmost and Outline — Notion itself isn’t in the running. The same outline vs notion tension that shows up elsewhere (polished all-purpose workspace vs. structured, ownable wiki) is really a proxy for this bigger question: does your data need to stay on infrastructure you control, or not? Once the answer is yes, Notion drops out of consideration entirely and the comparison becomes Docmost vs Outline.
Which Self-Hosted Wiki Should You Choose?
Once Notion is out of the running for infrastructure reasons, the practical docmost vs notion question rarely comes up on its own — it collapses into Docmost vs Outline. Match your situation to the row below:
| Scenario | Recommendation |
|---|---|
| Small team, no SSO setup, want the easiest deploy | Docmost — built-in auth, running in minutes |
| Larger org, already have OIDC/SAML, want the most mature editor | Outline — the setup cost is already sunk |
| Personal notes, no self-hosting required | Notion — accept that data leaves your infrastructure |
| Strict open-source procurement policy (government, some enterprises) | Docmost — AGPL-3.0 is OSI-recognized; Outline’s BSL is not |
| Team migrating off Confluence or Notion with existing content to import | Either — both Docmost and Outline ship built-in importers |
Migration effort is lower than people expect either way. Docmost’s importer reads Confluence and Notion exports directly, and Outline’s export/import tooling does the same in the other direction, so neither choice means retyping a wiki from scratch. The bigger cost is almost always the identity-provider setup for Outline, not the content migration itself — budget time for that step specifically if you go that route and don’t already run SSO somewhere in your stack.
Running Docmost on Contabo with Docker: Recommended Setup
For a small-to-medium team, a Contabo Cloud VPS 6 (6 vCores, 12 GB RAM, 200 GB storage, €7.00/month) is the sweet spot for a Docmost docker deployment — enough RAM to run the app, PostgreSQL, and Redis comfortably with headroom for concurrent editors, at Contabo’s RAM-per-Euro Core-line pricing. Point file attachments at Contabo Object Storage instead of local disk so uploads survive a server rebuild and don’t eat into the VPS’s own disk quota. For the full step-by-step — Docker Compose file, environment variables, and reverse proxy setup — see the dedicated Docmost self-hosting how-to.
FAQ: Docmost vs Outline vs Notion
It depends on what you’re optimizing for. Docmost is better if you want a genuinely open-source license, built-in email/password login, and a lighter setup with no identity provider required — you can have a small team writing pages within minutes of deploying the Docker Compose stack. Outline is better if you already run SSO, want the most mature and polished editor available, and don’t mind the BSL license terms. Neither is universally superior — they suit different starting points, and the honest answer is ‘it depends what infrastructure you already have.’
Yes — Docmost and Outline are both credible self-hosted Notion alternatives, though neither replicates Notion’s database-and-formula workspace exactly; both are wikis first, not all-purpose workspaces. Both give you a real-time collaborative editor and full data ownership on infrastructure you control; Docmost is the lighter, more open-source pick, while Outline offers a more Notion-like editing feel at the cost of requiring external SSO before anyone can sign in.
Yes, effectively. Outline has no built-in email/password login — every user signs in through Google, Slack, or a generic OIDC/SAML provider such as Keycloak or Authentik. If your team doesn’t already run one of these, you’ll need to stand up an identity provider before anyone can use Outline at all, which is the main setup cost that Docmost avoids by shipping working email/password auth out of the box.
Among self-hosted confluence alternatives, Docmost and Outline are the two strongest contenders in 2026. Docmost is the better fit for teams that want a real open-source license and minimal setup; Outline is the better fit for larger organizations that already run SSO and want the most mature, feature-complete editor available. Both replace Confluence’s per-seat licensing with infrastructure you control, and both ship importers that make migrating existing Confluence content straightforward.
