Knowledge Base & Wiki

Slab

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Panel rating · 6 judges · How to read the stars

Category median

Sovereignty: not determined

0–5 in half steps. 5 means the rubric's top anchor is met on the evidence.

by Fallacy Labs, Inc. · slab.com

An AI-assisted analysis of public evidence — not a hands-on test.

Every score, rationale and verdict on this page is AI-generated. Every claim cites the source it was read from. Nothing here is a human star review — and no score can be bought. How scores are made →

Method and versions

The Operations Lead v1.0 · The IT Administrator v1.0 · The Support Knowledge Manager v1.0 · The Engineering Lead v1.0 · The Quality Manager v1.0 · The Skeptic v1.0 · rubric v1 · evaluated 1 Nov 2026

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[![Slab: AI-assisted analysis on whats-best.ai](https://whats-best.ai/badge/knowledge-base/slab.svg)](https://whats-best.ai/software/knowledge-base/slab)

Add ?theme=dark to the image address for dark backgrounds. The badge shows the category and the month of the latest evaluation, and EU-Made where that is the product’s provenance. It never shows a score.

Slab at a glance

Vendor: Fallacy Labs, Inc.
Headquarters: Not stated on the vendor’s pages as of 1 Nov 2026
Data hosting: Not stated on the vendor’s pages as of 1 Nov 2026
Free plan: Yes, per the vendor’s own page source, captured 1 Nov 2026
Panel verdict: The AI panel rates Slab 3/5, the mean of 6 judges. Slab, a hosted team wiki from Fallacy Labs, Inc., is scored strongest at internal knowledge work: authoring and search, knowledge governance and access control. how scores are made
As of: Vendor pages captured 1 Nov 2026; evaluated by the panel 1 Nov 2026. all sources

Slab alternatives, European ones first →

Read this page as one judge. Each weighs the same scores by what they care about.

The IT Administrator

Weighted verdict

Runs IT for a public utility with 900 staff whose Confluence Server held twelve years of pages until Atlassian ended its support. Was offered the cloud, read the subprocessor list and went looking instead. Needs a migration that keeps page trees, permissions and attachments, single sign-on against Entra ID with groups synced, an audit log the auditor accepts, and an edition they can run in the utility's own data centre if the works council or the regulator asks.

Same scores as the panel view — this lens weights them the way this judge cares.

Scored by The IT Administrator

Panel median The IT Administrator This judge’s scores over the panel median. Each label opens its reasoning below.

Scores per criterion, in stars out of 5
Criterion	Panel median	The IT Administrator
Editor, structure & search	3.5 of 5	3 of 5
Verification, ownership & freshness	3.5 of 5	3 of 5
Permissions, SSO & administration	3.5 of 5	3 of 5
Help-center publishing & integrations	3 of 5	2.5 of 5
Import, export & self-hosting	2 of 5	2 of 5
European sovereignty	1.5 of 5	1.5 of 5
Pricing transparency	3 of 5	2.5 of 5

Editor, structure & search

How this is scored

How knowledge is written, organised and found again: the editor (rich text, Markdown, tables, embeds, diagrams, code blocks), templates, spaces or collections and a page tree, linking and backlinks, real-time co-editing, comments and mentions, page history with restore, full-text search across pages and attachments with filters, search inside the chat tool, and AI answers that cite the pages they draw on.

0 — Not a wiki or knowledge base; pages cannot be written, organised or searched with it.

3 — Pages with a rich-text editor in folders or a tree and a basic search; templates, history, co-editing and attachment search are basic or not described.

5 — A rich editor with tables, embeds and code blocks, templates, spaces or collections with a page tree, real-time co-editing with comments and mentions, page history with restore, and full-text search with filters.

8 — Search across attachments and connected tools, backlinks and a link graph or related pages, diagrams and Markdown both supported, AI answers that cite their source pages, search from Slack or Teams, and a template library with variables or page properties.

10 — Finding knowledge as a solved problem: search quality and how AI answers are grounded explained in published documentation, answers limited to what the reader may see, multilingual content with linked translations, and every page reachable within a stated structure from one place.

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The IT Administrator

The editor, hierarchical topics, real-time co-editing with comments and reactions, templates and search with facets are all documented, and search reaches connected tools such as Google Drive, Slack and Jira through Unified Search. Backlinks appear in the deletion flow and content is searchable from within Slack. We found no public information on attachment search, a link graph or related pages, template variables, or AI answers that cite their sources — the module named AI Ask appears only as a plan feature with no grounding detail — so I stop short of the higher band. 1 2 4 10 12 16

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Verification, ownership & freshness

How this is scored

Whether the content stays true: page owners or experts named per page, verification with a review date and a reminder when it lapses, approval or publishing workflows with drafts and reviewers, read confirmations for mandatory pages, analytics on views, searches without a result and stale pages, duplicate detection, archiving rules, and an audit trail of who changed and approved what.

0 — No way to see who owns a page or when it was last checked beyond the edit date.

3 — Page history and last-edited dates; owners, verification, approvals and content analytics are basic or not described.

5 — An owner or verifier per page, a review interval with reminders, a draft and publish step, page view statistics, and archived pages kept out of search.

8 — Approval workflows with several reviewers, read confirmations for mandatory pages, analytics on failed searches and stale content, duplicate or outdated content flagged automatically, and an exportable audit trail of changes and approvals.

10 — Governance that a regulated organisation runs on: controlled documents with versioned approvals that meet a named standard (ISO 9001, GxP), expiry and review enforced per space, knowledge gaps reported from searches and AI questions, and every published statement traceable to an approved version.

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The IT Administrator

Verification is genuinely documented: a primary verifier defaults to the post owner, review frequency is configurable, reminders arrive in-app and by email or Slack, expired posts show a yellow banner, and admin insights flag stale posts and unanswered questions. The audit log records logins, user account changes and deletions rather than edits and approvals, and defaults to 30 days of retention — too short to hand an auditor as it stands. We found no public information on read confirmations or duplicate detection. 2 4 11 12 13 14

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Permissions, SSO & administration

How this is scored

Who may see and edit what, and how the administrator keeps control: roles and permissions per space and per page, restricted or private pages, guest and external access, groups synced from Azure AD/Entra ID, Google Workspace or LDAP, single sign-on (SAML, OIDC), SCIM provisioning, two-factor authentication enforced, an audit log of access and permission changes, and admin controls over sharing and public links. Where the data is hosted and certifications are scored under sovereignty.

0 — Everyone in a workspace sees and edits everything; no permissions of any kind.

3 — Admins, members and guests, or private and shared pages; per-space or per-page rights, SSO and an audit log are basic or not described.

5 — Permissions per space and per page, guest access with limits, single sign-on through Google or Microsoft, two-factor authentication, groups, and admin control over public sharing.

8 — SAML or OIDC single sign-on with any identity provider, SCIM provisioning or LDAP and directory group sync, enforced 2FA, an audit log of views, edits and permission changes, IP or domain restrictions, and permissions honoured by search and AI answers.

10 — Access control an enterprise auditor accepts as documented: granular roles with inheritance explained, just-in-time and external access with expiry, every access and permission change logged and exportable to a SIEM, and the permission model published with its limits.

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The IT Administrator

Permissions per post and per topic with editor and viewer levels, guest access confined to their topics, SAML-based SSO, SCIM provisioning, admin-enforced two-factor and an IP restriction feature are all evidenced — most of what my Entra ID rollout needs. But the audit log covers authentication, user lifecycle and integration events while the captured pages do not show it recording permission changes or content edits, and 30 days of default retention is thin. We found no public information on directory group sync from Entra ID or on search honouring permissions. 4 5 7 13 14

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Help-center publishing & integrations

How this is scored

How knowledge reaches people outside the editor: public or password-protected sites and help centers with a custom domain, branding and SEO controls, an in-app widget or contextual help, ticket deflection in a help desk, multilingual publishing, integrations with Slack, Microsoft Teams, Jira, Google Drive, help desks and CRMs, a browser extension, a documented REST or GraphQL API, webhooks, and an MCP server or connector for AI assistants.

0 — Content cannot be shared beyond the editor and nothing connects to it.

3 — Sharing a page by public link and a few integrations such as Slack; a branded help center, an API and webhooks are basic or not described.

5 — A published site or help center with custom domain and branding, integrations with Slack or Teams and Google Drive or Microsoft 365, a documented API, and embeds of common tools.

8 — A help center with SEO controls, multilingual publishing, access for logged-in customers and analytics, a widget or contextual help inside the customer's product, help desk integration with ticket deflection, webhooks, and a connector or MCP server for AI assistants.

10 — Knowledge delivered wherever it is needed from one source: internal and public audiences served from the same pages with per-audience rules, a complete API with SDKs and rate limits stated, a marketplace of integrations, and every channel measured in one report.

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The IT Administrator

Custom domains, public internet links on individual posts, Slack and Google Workspace integrations, a documented GraphQL API with webhooks and dozens of integrations are all documented. The API and webhooks are available only on the Business and Enterprise plans, and we found no public information on a branded help center with SEO controls, multilingual publishing, ticket deflection, a customer-facing widget or an MCP connector for AI assistants. External reach sits at shared public post links rather than a managed customer site. 2 4 13 15 16

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Import, export & self-hosting

How this is scored

What arriving and leaving would cost: import from Confluence, Notion, Google Docs, Word and Markdown with structure, attachments and links kept, a full export of every space in an open format (Markdown, HTML, XML, PDF) with attachments and history, an API that reaches all content, a stated migration path from Confluence Server or Data Center, open-source code under a named licence, and a self-hosted or on-premise edition with its own documentation.

0 — Content cannot be imported or exported; it can only be read in the vendor's interface.

3 — Single pages export to PDF or Word and some files can be imported; a full export, a Confluence import and self-hosting are basic or not described.

5 — Import from Confluence or Notion and from Word or Markdown, a full workspace export to Markdown or HTML with attachments, a documented API covering pages, and a stated retention of data after cancellation.

8 — A Confluence migration tool or service that keeps hierarchy, permissions and attachments, a full export with history in an open format, a self-hosted or on-premise edition with installation and update documentation, and data returned or deleted on termination under stated terms.

10 — The customer owns the content end to end: open-source code under a named licence that runs fully self-hosted with feature parity stated, a complete export another tool can import without loss, and the deletion of every copy on termination documented.

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The IT Administrator

A vendor-assisted migration is offered and admins can bulk-export all published posts and topics to Markdown or Word, with a ten-article import-and-export help section behind it; the bulk export cannot reach drafts or secret topics the admin does not belong to, and we found no public information on whether attachments or page history are included. The terms put the burden of exporting content before termination on the customer. We found no public information on a Confluence import that keeps hierarchy, permissions and attachments, or on any self-hosted or on-premise edition — which rules it out for my data-centre requirement regardless of anything else. 1 6 8 15 18

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European sovereignty

How this is scored

Who the contracting entity and the parent company are, where pages, attachments and search indexes are stored and processed, and who the subprocessors are (hosting, CDN, search, email, support, payment, and the AI model provider that reads pages for answers and summaries, with whether content is used for training). Independently sourced by the sovereignty pipeline; a wiki holds internal processes, customer data and trade secrets, so the whole chain counts, not only the database. A self-hosted or open-source edition the customer runs on its own European servers counts as the customer's chain, whatever the vendor's seat.

0 — Non-EU vendor and contracting entity, hosting unstated, subprocessors unnamed, and no data processing agreement offered.

3 — A privacy policy and a data processing agreement exist, but hosting location is unstated or non-EU and the subprocessors are not listed.

5 — EU data residency available and an EU contracting entity or EU representative, but parts of the chain (CDN, search, email, support, AI model) run through non-EU providers without a stated safeguard, or EU residency is limited to the higher tiers.

8 — EU hosting on named infrastructure, EU contracting entity, subprocessors listed with their locations including the AI model provider, no training on customer content stated, a data processing agreement published, and security certifications (ISO 27001, SOC 2) stated — or a self-hosted edition documented that keeps every page on the customer's own servers.

10 — Sovereign end to end and evidenced: European ownership, entity, hosting and every subprocessor including AI, or a self-hosted open-source edition with no call home, data export and deletion documented, and certifications published with their scope rather than implied.

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The IT Administrator

The contracting entity is Fallacy Labs, Inc. in Covina, California under California law, data is processed in the United States, and the security page names Google Cloud Platform as host without stating a region. Standard contractual clauses for EEA transfers, data protection agreements with recipients, and SOC 2 Type 2 plus SOC 3 certification are stated, which earns a small credit. We found no public information on a subprocessor list, an EU data residency option, or a self-hosted edition to fall back on — nothing here the works council would accept for a utility. 5 7 8

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Pricing transparency

How this is scored

Whether a buyer can compute the real annual cost from public pages alone: price per user and tier, readers or guests free or charged, minimum seats, which features (SSO, SCIM, audit log, verification, help-center publishing, custom domain, AI answers, EU data residency) cost extra, the free tier and its limits, storage limits, the self-hosted edition's licence and support price, minimum term and setup or migration fees.

0 — No public prices at all; every customer is a sales call.

3 — A starting price or a free tier exists, but how cost scales with users, readers or features is unclear.

5 — Tiers are public with their price per user and main inclusions, but at least one commonly needed piece (SSO, AI, readers or guests, EU residency, the self-hosted edition) is unpriced or "on request".

8 — Every tier priced publicly with its scaling rule (editors, readers, guests, storage), add-ons priced, the self-hosted edition's licence and support cost stated, minimum seats, term and VAT treatment stated.

10 — Complete price computability: annual cost derivable for a given number of editors and readers and a feature set, with every add-on, AI credit, setup, migration and support fee and the cancellation and data-return terms published.

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The IT Administrator

Four tiers are public with per-user annual prices — Free at $0 for up to 10 users, Startup at $6.67 user/month billed annually, Business at $12.50 user/month billed annually — and per-tier limits for attachments, version history, analytics retention and support level are stated. Enterprise is "Custom, contact sales@slab.com", the AI modules appear only as an "Advanced" label, and the audit log and API sit behind Business and Enterprise. We found no public information on monthly prices, minimum seats, guest charges, term or VAT treatment, so a buyer can estimate but not compute the annual cost for 900 staff from these pages alone. 4 8 14 15

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European sovereignty — proven facts

0 of 6 dimensions proven

Built only from facts shown on the vendor's own pages. A dimension we could not prove is left open, not scored as zero.

Legal entity	Not determined	—	uncited Report an error
Hosting location	Not determined ⚠ unverified	—	uncited Report an error
Hosting options	Not determined	—	uncited Report an error
Open source	Not determined	—	uncited Report an error
Data processing agreement	Not determined	—	uncited Report an error
Transfer impact assessment	Not determined	—	uncited Report an error

Questions about Slab

Is Slab European?

No. whats-best.ai classifies Slab as Rest of world.

Where does Slab store data?

Not stated on the vendor’s pages as of 1 Nov 2026.

Does Slab have a free plan?

Yes. Slab has a free plan, per the vendor’s page captured 1 Nov 2026.

What are the best alternatives to Slab?

As of 1 Nov 2026, the panel rates Document360 (3.5/5), BookStack (3/5) and XWiki (3/5) highest among the other 13 Knowledge Base & Wiki products evaluated. Ratings that look equal are rounded to half stars; the order uses the unrounded rating, then the name. The highest-rated European alternative is Document360 (UK / wider Europe). Ratings are the AI panel’s opinion, formed from public evidence: how scores are made. The full list, with European products first: Slab alternatives.

Where this could be wrong

Evidence ages. The oldest capture behind this page is from 1 Nov 2026. Vendors change pricing and policies without notice; every fact reflects its source as of the capture date shown in the registry.
Weak sourcing — Hosting location. Not confirmed on the vendor’s own pages as captured.
AI can misread a source. Extraction and judgement are automated; a citation guarantees traceability, not infallibility. If something here is wrong, say so — no account needed, every report is decided within 5 business days, and accepted corrections are published.

What we left out

A claim that does not survive our checks costs us the claim, not the page. This is what was taken off this one.

4 integrations facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material. Know more? Tell us
3 legal facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material. Know more? Tell us
1 compliance fact could not be confirmed on the vendor’s page as captured and was left out of this page and of the panel’s material. Know more? Tell us
1 pricing fact could not be confirmed on the vendor’s page as captured and was left out of this page and of the panel’s material. Know more? Tell us
1 product fact could not be confirmed on the vendor’s page as captured and was left out of this page and of the panel’s material. Know more? Tell us
1 sovereignty dimension could not be confirmed on the vendor’s own pages and is shown as unknown. Know more? Tell us
6 of the readings below were written against an earlier fact sheet — a fact has been corrected, added or pulled since. Until the panel next runs on this product you are reading the older judgement. Know more? Tell us

Do you know more about Slab? Tell us Report an error on this page

Sources (18)

The pages every claim on this page was read from — each one checked, dated, and kept verifiable.

1 Vendor homepage slab.com Checked 1 Nov 2026 Details →
2 Features page slab.com Checked 1 Nov 2026 Details →
3 Integrations page slab.com Checked 1 Nov 2026 Details →
4 Pricing page slab.com Checked 1 Nov 2026 Details →
5 Security page slab.com Checked 1 Nov 2026 Details →
6 Help center help.slab.com Checked 1 Nov 2026 Details →
7 Privacy policy slab.com Checked 1 Nov 2026 Details →
8 Terms of service slab.com Checked 1 Nov 2026 Details →
9 Editor, structure & search — found from sitemap help.slab.com Checked 1 Nov 2026 Details →
10 Editor, structure & search — found from sitemap help.slab.com Checked 1 Nov 2026 Details →
11 Verification, ownership & freshness — found from sitemap help.slab.com Checked 1 Nov 2026 Details →
12 Verification, ownership & freshness — found from sitemap help.slab.com Checked 1 Nov 2026 Details →
13 Permissions, SSO & administration — found from sitemap help.slab.com Checked 1 Nov 2026 Details →
14 Permissions, SSO & administration — found from sitemap help.slab.com Checked 1 Nov 2026 Details →
15 Help-center publishing & integrations — found from sitemap help.slab.com Checked 1 Nov 2026 Details →
16 Help-center publishing & integrations — found from sitemap slab.com Checked 1 Nov 2026 Details →
17 Import, export & self-hosting — found from sitemap help.slab.com Checked 1 Nov 2026 Details →
18 Import, export & self-hosting — found from sitemap help.slab.com Checked 1 Nov 2026 Details →