The short version. IT documentation software comes in four shapes: a wiki, a documentation platform, an MSP-style asset-linked tool, and an answering layer. Most teams under 500 people buy a documentation platform and use a fifth of it. The capabilities that justify the category are version proof, scheduled review and reporting on what people searched for and did not find. Everything else in the feature matrix is real and will not be what you use in year two.
The four shapes of IT documentation software
Picking the shape is most of the decision, and the shortlists in this category mix them without saying so.
A wiki. Confluence, Notion, Slab, Tettra. Pages, search, light structure. Right when the problem is that documentation lives in people’s heads and needs somewhere to go.
A documentation platform. Document360, Guru, Helpjuice. Versioning, review cycles, owners and analytics. Right when documentation is managed as a controlled set rather than written ad hoc.
An asset-linked tool. IT Glue, Hudu and similar, built for managed service providers where documentation attaches to a client, a device or a credential. Right when the documentation is about specific machines and accounts rather than about process.
An answering layer. Not a library at all. It reads the documents you already have and answers questions about them. Right when the documents are fine and nobody can get an answer out of them.
What a team under 500 actually needs
Three capabilities, and the rest is specified for larger organisations.
Version proof. Being able to produce the runbook as it stood on a given date, quickly, when an incident review asks what the procedure was.
Scheduled review with an owner. Content that flags itself when nobody has checked it for six months, assigned to a person rather than a team. This prevents the failure that never announces itself.
Reporting on failed searches. The list of things people looked for and did not find is the list of documents worth writing next, and almost nothing else tells you that.
Category hierarchies, multi-stage approval workflows, branding and public-facing features are all genuine and none of them is why this category exists for an internal technical team.
What the published options cost
Five publish openly, which is worth something in a category where several do not.
Helpjuice publishes by included users rather than per seat, at 249 per month for 30 users, 449 for 100 and 799 for unlimited. Its page carries no currency symbol anywhere.
Slab is free to 10 users, then Startup at $6.67 and Business at $12.50 per user per month, both billed annually.
Tettra publishes $8 per user per month on Scaling, carrying a ten user minimum and billed yearly.
Notion is free, then $10 Plus and $20 Business per member per month.
Confluence is a configurator. At 25 seats Standard is $7.15 per user per month and at 300 seats it falls to $5.78, so a figure quoted without its seat count describes a different company.
What stopped publishing this year
Three of the obvious candidates changed during 2026, which affects your evaluation calendar more than your shortlist.
Guru now offers a package built around your scale with a call booking. Document360’s pricing page became a three-step questionnaire. Glean has no pricing page at all and its pricing URL redirects to the homepage.
Counting Bloomfire and Moveworks, five of the eleven vendors we checked publish nothing. Carry at most two of them through an evaluation, because each adds roughly two weeks of scheduling and follow-up that nobody owns.
Why most teams over-buy
A pattern worth naming, because it is predictable and expensive.
Demos show the tier that displays the product at its best, which is reasonable. The features that impress in a demo are the governance ones: hierarchies, approval chains, analytics dashboards. Those are specified for teams managing thousands of documents as a core job.
An internal IT team with eighty runbooks and two people maintaining them needs findability, an owner and a review date. Eight months later the approval workflow has been switched off because nobody had time to approve things, the hierarchy holds two categories, and the analytics were interesting for a fortnight.
Nothing went wrong, and the team is paying for a documentation platform while running a wiki. Buy the tier below the one the demo suggests, because upgrading later is easy and explaining a year of unused workflow licences at renewal is not.
The capability nobody demos
Four practical differences that only appear after a few months of real use.
What happens to a document when its owner leaves. Most tools do nothing and the page quietly becomes unowned, which is the start of every stale library.
Whether readers can flag something as wrong without being able to edit it. This turns the whole team into a detection mechanism and support for it varies widely.
How search behaves when three documents have similar names. Some tools surface the current one, others return all three with nothing indicating which is live.
And how quickly an edit changes an answer, if the tool answers questions. A runbook updated on Monday must not be answered from the old version on Tuesday.
When the problem is retrieval rather than storage
The most common finding once the content is reasonable, and the one that sends teams back to the market.
Every library in this comparison returns documents. The engineer asked a question, and the answer is inside one of those documents. Asking a colleague returns an answer in one step, so people do that.
An answering layer reads documents where they already live and returns a sentence with a link to the source. No migration, no new editor, no second home for content.
Matram is one of these, and it is owned by the same people who publish this site, which you should weigh against this section. It publishes flat pricing at $29, $69 and $199 per month with unlimited seats, so cost does not rise as more of the team asks.
Its limits are specific. There is no free tier, only a 30 day trial without a card. It answers rather than actioning tickets, so it will state what the runbook says and will not run the procedure. And it is not an ITSM or service desk platform, so there is no ticket queue, routing or case management in it.
It also has no authoring or versioning. If your requirement is proving what a procedure was on a given date, you need something from the categories above, possibly as well.
How to shortlist in a week
Four steps that keep this to days rather than a quarter.
Count your live documents, excluding drafts, superseded versions and the four near-identical copies of the same runbook. Most estates that feel like three hundred items are eighty live documents and a lot of history.
Name the owner. Without one, every governance feature in every product is configuration you will do once, and the tool choice barely matters.
Price the five published vendors at your headcount, counting readers rather than writers. Then take twenty real questions from your ticket history and ask each shortlisted tool all twenty, counting usable answers rather than relevant pages.
That last count tells you whether IT documentation software is what you need at all, or whether the gap is retrieval and a narrower tool would close it for a fraction of the cost.
What should IT documentation software do for a team under 500?
Three things. Produce the version of a document that was live on a given date, flag content for review against a named owner, and report what people searched for and did not find. Those justify the category. Category hierarchies, multi-stage approval workflows and public-facing features are specified for teams managing documentation as a full-time job, and an internal team with eighty runbooks will not use them.
Which options publish their prices?
Helpjuice, Slab, Tettra, Notion and Confluence all publish, although Confluence is a configurator whose per-user rate depends on seat count. Guru and Document360 both stopped during 2026 and Glean has no pricing page at all. Price the published ones first so you arrive at any sales call with a baseline at your exact headcount, which makes the conversation comparative rather than exploratory.
Do we need an MSP-style tool like IT Glue?
Only if your documentation attaches to specific devices, accounts and credentials rather than to processes. Those tools are built for managed service providers juggling many client environments, and the asset linkage is the product. An internal team documenting how things are done, rather than what is installed where, is usually better served by a wiki or a documentation platform at considerably lower cost.
Why do teams end up paying for features they do not use?
Because demos show the tier that displays the product best, and governance features are what impress in a demo. Eight months later the approval workflow is switched off, the hierarchy holds two categories and the analytics were interesting for a fortnight. Buy the tier below the one demonstrated. Upgrading against a specific unmet need is easy, and justifying a year of unused licences at renewal is not.
How do we stop the documentation going stale?
Name one person per document, visible to readers rather than buried in revision history, and put a recurring review date in that person’s calendar. Add a visible last-reviewed stamp so readers can judge for themselves. No tool creates an owner, and a library with owners in a mediocre tool stays current while an unowned library in an excellent one does not.
What if people still ask instead of searching?
Then the gap is retrieval rather than storage, and another document library will reproduce it because every one of them returns pages. Count how many of your last twenty questions had answers that already existed in writing. If most did, the documentation is fine and the problem is getting an answer out of it, which is a different shape of tool and considerably cheaper to test.