Slab

Internal knowledge base for teams, organised by topic rather than folders, with search across connected tools

As of 31 August 2026, Slab is free to use. A wiki for internal company knowledge, built by the author of the Quill editor. Softwr lists it under Documentation. Slab is available on Web.

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Overview

What Slab does

Slab is a hosted knowledge base for internal documentation: handbooks, onboarding, process notes and decisions. Content is organised into topics that can be applied to a post more than once, so a document about incident response can sit under both Engineering and Operations without duplication or a fight about where the folder should live. The editor is built on Quill, which the founder also wrote, and it is deliberately plain rather than a database or project tool. The feature that decides purchases is unified search. Slab indexes connected sources, so a search returns matching Slab posts alongside relevant Google Drive files, Slack messages and GitHub content. The realistic state of most companies is that knowledge is already scattered across those tools, and a knowledge base that only searches its own content is competing with reality rather than fixing it. Slab also has post verification, where owners confirm a document is still accurate on a schedule and readers see when it was last checked. The buyer is a company of roughly twenty to a few hundred people that wants an internal handbook and has decided a general workspace tool is too much machinery. The trade-off is scope: Slab is not for public product documentation, has no docs-as-code workflow, no offline mode and limited hierarchy, so teams that need versioned technical documentation on a custom domain are looking at the wrong category of tool.

What people use it for

Building an employee handbook and onboarding path that new starters can actually find
Replacing a folder-based wiki where nobody agrees which folder a document belongs in
Companies whose knowledge is already spread across Drive, Slack and GitHub and needs one search box
Documenting process and decisions for teams that do not want a project management tool attached

Where it falls short

Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Slab.

It is built for internal knowledge, so public product documentation on a custom domain with versioning is outside what the product does.
There is no docs-as-code workflow, no git synchronisation and no markdown files on disk, so engineering-owned technical documentation ends up somewhere else anyway.
Hierarchy is shallow by design, and organisations that genuinely need deep nested structure find topics an awkward substitute rather than an improvement.
There is no offline mode, so a knowledge base that includes incident runbooks is unavailable during exactly the incident where the network is the problem.
Pricing is per user per month, so organisations where most staff only read a handbook twice a year still pay a seat for each of them.

Cross-shopped

What people choose instead of Slab

Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.

Slabvs
Nuclino
Nuclino: A lighter internal wiki with fast search and lower per-seat cost for small teams
Slabvs
Outline
Outline: Self-hostable open-source knowledge base if data residency or licence cost matters more than integrations
Slabvs
BookStack
BookStack: Free and self-hosted with a strict book and chapter hierarchy when you want structure enforced

Pricing

What Slab costs

Taken from the vendor's own pricing page. Prices move, so check before you buy.

Free

Up to ten users
Unlimited posts
Core integrations
Limited post history

Slab

On request

Priced per user per month with annual billing
Unlimited users and history
Full integration set and unified search
Post verification and analytics
SSO and advanced permissions on higher tiers

Capabilities

Features

Topics instead of folders
Posts can belong to several topics, removing the single-location problem that folder trees create
Unified search
Results include connected Google Drive, Slack, GitHub and other sources alongside Slab content
Post verification
Owners confirm accuracy on a schedule, and readers see the last verified date on the page
Quill editor
A plain writing surface focused on prose, tables and code rather than databases and views
Permissions
Per-topic and per-post access control, with SSO on higher tiers
Free tier for small teams
Up to ten users at no cost, which covers a startup until it is not one

Answered, with sources

Questions people ask

Each answer names the page it came from, so you can check it rather than take our word for it.

Can I publish documentation publicly with Slab?

Posts can be shared by link, but it is not a product documentation platform. There is no custom domain publishing, versioning or API reference tooling.

What does the free plan actually cover?

Up to ten users with unlimited posts and core integrations. It is a real free tier rather than a trial, and it is enough for a small company handbook.

How does it compare with a general workspace tool?

Slab does less on purpose. There are no databases, boards or task views, which makes it faster to write in and much harder to turn into an unmaintained sprawl.

Does search really cover other tools?

Yes, connected sources are indexed and appear in results. That integration is the main reason to choose it, so verify your specific tools are supported before committing.