The 9 best IT documentation software tools in 2026

Last updated: Sep 2, 2026

IT documentation software keeps runbooks, SOPs, asset records, and knowledge base articles in one searchable, permissioned place. This guide compares the nine best tools and who each one is built for.

TL;DR

• Pageloop is the best pick for product and support teams that need the knowledge base to stay accurate as the product ships.

• IT Glue and Hudu lead for MSPs and internal IT documenting assets, credentials, and configurations.

• GitBook fits engineering teams that keep software documentation in version control beside the code.

• BookStack and Wiki.js are the free, open-source, self-hosted options.

"IT documentation" is really three jobs, and no single tool is best at all of them. An MSP tracking client firewalls and passwords needs relationship mapping and a credential vault. A product team writing customer help articles needs publishing and search. An engineering team needs software documentation versioned beside the code it describes.

Key features to look for in IT documentation software

It depends on which of the three jobs you are doing. A short list of features separates tools that stay useful from tools that rot.

At a minimum, any IT documentation software worth adopting should give you search and structure so a few hundred articles stay findable, role-based access and SSO so passwords and network layouts are not open to everyone, version control so you can see what a runbook said before someone changed it and roll it back, and integrations with the systems you already run. Table stakes.

The tools that stay useful past year one go further:

• Relationship mapping. For infrastructure docs, the value is in the links: this server, these credentials, that contract, the person who owns it. IT Glue and Hudu are built around this.

• Search that scales. Once you pass a few hundred articles, keyword search stops being enough. Conversational or semantic search, like Document360's Eddy, is the difference between finding an answer and giving up.

• Native integrations, not exports. An integration that actually reads your systems, the way Confluence reads Jira, beats one that only pushes files out.

• A maintenance model. Storing an article is the easy part. Knowing when it has gone out of date is the hard one. Ask what a platform does twelve months after launch, when the product has shipped every week since and half the screenshots are wrong. This is the job this guide keeps coming back to, and the one Pageloop is built for.

Best IT documentation software at a glance

What's the best IT documentation software?

1. Pageloop

Pageloop is built for the wall every other tool on this list runs into: keeping documentation right after the product it describes has moved on. Instead of waiting for someone to notice an article is wrong, it watches where changes actually happen and matches each one against your existing articles to find the pages that just went out of date.

It connects to product signals across Slack, Linear, Jira, GitHub, and support tickets, flags the articles a given change affects, outdated screenshots included, and drafts the fix in your team's own writing style. Every change waits in a review queue for a person to approve before it publishes. On top of that, its audit sweeps for broken links, conflicting articles, and duplicates.

Pageloop hosts your docs, or connects to a number of popular help centers. Its focus is the knowledge base and help center layer, where articles go stale every release, rather than infrastructure inventory. Pageloop earns the top slot on the internal or customer-facing knowledge base that has to stay right as the product changes: the Update workflow finds every article a change might have made wrong, suggests the fix, and tracks the team to done. That problem has a name, and we wrote about it in documentation drift.

Strengths:

• Watches Slack, Linear, Jira, GitHub, and support tickets, and flags the exact articles each product change affects

• Drafts updates in your team's writing style, with every change held for human review before publishing

• Detects outdated screenshots and generates replacements

• Audits for broken links, conflicting articles, and duplicates

• Hosts your docs, or connects to a number of popular help centers

Pageloop is best for... product and support teams whose knowledge base has to keep pace with a product that ships constantly, without someone rereading every article after each release.

2. IT Glue

IT Glue is documentation software built for managed service providers and internal IT departments that track infrastructure, and its strength is structure. Assets, configurations, and credentials are linked through relationship mapping, so a technician looking at one server can see the passwords, contacts, and connected systems tied to it. Network Glue automates network discovery, and SafeShare handles password sharing with expiring links.

The flip side is focus. IT Glue is priced and shaped for teams whose day is asset tracking and client infrastructure, so a product team writing customer help articles will find most of the platform aimed at a different job.

IT Glue is best for... MSPs and internal IT teams that need infrastructure, assets, and passwords documented and linked in one place.

3. Hudu

Hudu covers the same ground as IT Glue, asset tracking and password management for IT operations, and has won a following among smaller MSPs and internal teams that want it at a lower price. It keeps devices, vendors, systems, credentials, and processes connected in one platform, and turns recurring work into repeatable checklists and SOPs. The company reports more than 5,700 IT teams using it.

Like IT Glue, Hudu is infrastructure documentation. If your problem is a customer help center rather than a server room, this whole category solves the wrong half of it.

Strengths:

• Asset tracking with structured forms for devices, vendors, and the systems that connect them

• A built-in credential vault with access controls

• Repeatable process checklists

Hudu is best for... IT teams that want IT Glue's core, infrastructure docs plus passwords, at a friendlier price.

4. Confluence

Confluence is Atlassian's team workspace, and its case is simple: if your engineering team already runs on Jira, Confluence documentation links to issues natively, with no extra integration to configure. It organizes content into spaces and pages, supports live docs, whiteboards, and databases, and layers Atlassian's Rovo AI on top for summaries and answers pulled across your connected tools.

Confluence is broad rather than specialized. It will hold IT runbooks, product specs, and meeting notes equally well, which is the appeal and also the limit: it does not track infrastructure the way IT Glue does, and its help-center publishing is thinner than a dedicated knowledge base like Document360.

Confluence is best for... teams already standardized on Atlassian who want their documentation to sit next to the work.

5. Notion

Notion is a flexible workspace of blocks and databases, and cross-functional teams reach for it because it bends to any structure without much setup.

• Wikis, project trackers, and internal docs in one place

• Databases and blocks that can be arranged into whatever structure the team thinks in, from a simple runbook to a linked asset register

• Fast to start, with no setup overhead for a small team

The flexibility is also the ceiling. Notion has no built-in asset tracking, no in-app help widget for customers, and no native connection to support platforms, so teams tend to outgrow it once documentation becomes a job rather than a side task.

Notion is best for... early-stage and cross-functional teams that want one adaptable workspace before documentation is a dedicated role.

6. BookStack

BookStack is a free, open-source, self-hosted documentation platform, and for teams with a hard requirement to keep data on their own servers, that is the whole pitch. Content is organized into books, chapters, and pages, it is fully searchable, and it supports SAML2, OIDC, and LDAP for enterprise authentication, plus a full roles and permissions system. It is MIT-licensed and runs on PHP and MySQL.

Self-hosting means you own the maintenance: hosting, updates, and backups are yours to run. BookStack trades the polish and AI features of commercial tools for control and a price of zero.

BookStack is best for... teams with data-residency rules or a preference for open source, and the ops capacity to host it.

7. Wiki.js

Wiki.js is an open-source, self-hosted wiki that runs on Node.js and stores content in PostgreSQL, MySQL, MariaDB, SQL Server, or SQLite. The editors span Markdown with live preview, a WYSIWYG visual builder, and raw HTML, so technical and non-technical staff can both write in it.

Like BookStack, Wiki.js puts hosting, updates, and backups on your team, and several of its modules are still marked coming soon.

Strengths:

• Authentication modules for LDAP, SAML, CAS, Okta, Azure AD, and generic OAuth2 or OpenID Connect, plus two-factor authentication and granular group permissions

• Git sync to GitHub, GitLab, Bitbucket, and Azure DevOps

• Version tracking on every change, with visual compare and revert

Wiki.js is best for... teams that want a modern self-hosted wiki with enterprise authentication and are comfortable running a Node.js stack.

8. Document360

Document360 is a knowledge base platform aimed at large, structured documentation sets. Its category manager keeps deep hierarchies organized, it offers Markdown and WYSIWYG editors, and its Eddy AI search answers questions from your published articles and cites the sources it used. One workspace covers customer help centers, internal knowledge bases, and API docs, and a support-ticket deflector catches questions before they reach the queue.

The trade-off is setup. Categories, workflows, access controls, and branding take real time to configure, which is more than a small IT team documenting a dozen systems needs on day one. We looked at more options in our roundup of tools that keep a knowledge base up to date.

Document360 is best for... teams running a large, structured knowledge base for internal and public audiences at once.

9. GitBook

GitBook is documentation software built for developers. Git Sync connects a repo so teams branch, review, and merge docs with GitHub or GitLab the way they handle pull requests, and the GitBook Agent scans published docs and flags pages that no longer match the product.

That workflow assumes Git fluency, so GitBook is less accessible for the non-technical staff who update articles daily. For a deeper look at developer-focused options, see our guide to the best developer documentation tools with AI-assisted maintenance.

GitBook is best for... engineering teams that want docs versioned and reviewed alongside their code.

Frequently asked questions

What is IT documentation software?

IT documentation software is knowledge management software specialized for technical content: teams use it to create, store, and maintain documentation about an organization's systems. That covers infrastructure and assets, network configurations, standard operating procedures, and the knowledge base articles staff and customers rely on. G2's IT documentation category ranks Confluence, NinjaOne, IT Glue, Hudu, and M-Files among its leaders, with Pageloop covering the maintenance layer that keeps any of them current.

What types of documentation do IT teams need to manage?

IT teams typically manage four kinds of documentation:

• Infrastructure and asset records, covering devices, network configurations, and the way systems connect to each other

• Process documentation: SOPs and runbooks

• Reference knowledge for how everything fits together

• Customer- or staff-facing help articles

Few single tools cover all four well, which is why most teams run more than one.

What is the difference between a wiki and IT documentation software?

A wiki, like Confluence, BookStack, or Wiki.js, is a general tool for writing and linking pages, with structure left to the team. Dedicated IT documentation software adds purpose-built features on top: asset tracking, relationship mapping, permissioned templates, or, in Pageloop's case, automatic detection of which articles a product change has made outdated.

Can AI keep IT documentation up to date?

AI can flag outdated content, draft the fix, and surface gaps, with a person approving each change. Pageloop works this way: it monitors product releases and support signals, matches them to affected articles, and drafts the update for human review before it publishes. That keeps a knowledge base current without asking someone to reread every article after every release.

How do you choose the right IT documentation software?

Start with what you are documenting, then match it to the tool:

• Client or company infrastructure, where you are tracking assets, configurations, and passwords across many systems: IT Glue or Hudu

• A general team wiki: Confluence or Notion

• Data you must keep on your own servers: BookStack or Wiki.js

• A large, many-category knowledge base: Document360

• Developer docs: GitBook

Then ask how each keeps documentation accurate over time, and add Pageloop where a knowledge base has to stay current as the product changes.

Which IT documentation software should you pick?

Match the tool to the job. IT Glue and Hudu document infrastructure for IT operations and MSPs. Confluence and Notion are the flexible wikis, strongest when your team already works inside their ecosystems. BookStack and Wiki.js are the self-hosted, open-source choices, and Document360 and GitBook serve large knowledge bases and software documentation respectively. Pageloop is the pick for the knowledge base itself. The demo is a conversation with a founder: book one here.

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