ProProfs Knowledge Base runs on web, Android, iOS and Windows, with a free plan and 25-article limit.
Free plan Free trial From $0.99 a month, billed yearly AndroidiPhone & iPadWebWindowsBrowser extensionAPI
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Best Knowledge Base Software 2026
Facts read 20 Sep 2026 – 21 Oct 2026
ProProfs Knowledge Base leads this list of 138 (record score 8.6, free plan). Confluence is next (record score 8.3, free plan), and Nuclino is the next highest-placed with a free plan (record score 8.3).
Knowledge base software helps teams create, organize and publish internal or customer-facing information. This guide helps you compare tools for documentation, support content and shared company knowledge.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 ProProfs Knowledge Base | ProProfs Knowledge Base runs on web, Android, iOS and Windows, with a free plan and 25-article limit. | 8.6 | $0.99 a month, billed yearly | Free plan | Android, iPhone & iPad, Web, Windows | 28 Sep 2026 |
| 02 Confluence | Confluence runs on web, Android, iOS and self-hosted deployments for team knowledge publishing. | 8.3 | $5.42 a month | Free plan | Android, iPhone & iPad, Web, Self-hosted | 28 Sep 2026 |
| 03 Nuclino | Nuclino offers web, Android, iOS, Windows, macOS and Linux access, plus a 50-article free tier. | 8.3 | Free plan | Free plan | Android, iPhone & iPad, Web, Windows | 2 Oct 2026 |
| 04 Zendesk Guide | 8.0 | $19 a month, billed yearly | Free trial | Android, iPhone & iPad, Web, Windows | 21 Oct 2026 | |
| 05 Slite | Slite offers paid knowledge publishing across web, desktop, mobile and extensions, plus custom domains. | 7.9 | $120 a year | Free trial | Android, iPhone & iPad, Web, Windows | 30 Sep 2026 |
| 06 Zoho Learn | Zoho Learn is a web, Android and iOS knowledge base with a free plan and API access. | 7.8 | Free plan | Free plan | Android, iPhone & iPad, Web, API | 9 Oct 2026 |
| 07 XWiki | XWiki is a self-hosted and web knowledge base with free and paid plans, API access and Windows support. | 7.7 | Free plan | Free plan | Web, Windows, Linux, API | 11 Oct 2026 |
| 08 BlueSpice | BlueSpice is a self-hosted knowledge base with free and paid plans for internal or external publishing. | 7.6 | €4.50 a month, billed yearly | Free plan | Self-hosted | 27 Sep 2026 |
| 09 GitBook | GitBook provides web publishing and API access for internal or external documentation. | 7.6 | $65 a month, billed yearly | Free plan | Web, API | 28 Sep 2026 |
| 10 Docmost | Docmost is open-source wiki software for collaborative editing on web and self-hosted installations. | 7.6 | $72 a year | Free plan | Web, API, Self-hosted | 1 Oct 2026 |
Compare free plans, paid starting points, publishing audience, article limits, custom domains, SSO support, version history and content analytics. Check platform fit across web, API, self-hosted, Windows, Linux and macOS options.
02
Confluence
Confluence runs on web, Android, iOS and self-hosted deployments for team knowledge publishing.
AndroidiPhone & iPadWeb+1 Record8.3 Visit
03
Nuclino
Nuclino offers web, Android, iOS, Windows, macOS and Linux access, plus a 50-article free tier.
AndroidiPhone & iPadWeb+4 Record8.3 Visit
04
Zendesk Guide
AndroidiPhone & iPadWeb+3 Record8.0 Visit
05
Slite
Slite offers paid knowledge publishing across web, desktop, mobile and extensions, plus custom domains.
AndroidiPhone & iPadWeb+4 Record7.9 Visit
6
Zoho Learn
AndroidiPhone & iPadWeb+1 Free plan Record7.8 Visit Zoho Learn is a web, Android and iOS knowledge base with a free plan and API access.
7
XWiki
WebWindowsLinux+2 Free plan Record7.7 Visit XWiki is a self-hosted and web knowledge base with free and paid plans, API access and Windows support.
8
BlueSpice
Self-hosted €4.50 a month, billed yearly Record7.6 Visit BlueSpice is a self-hosted knowledge base with free and paid plans for internal or external publishing.
9
GitBook
WebAPI $65 a month, billed yearly Record7.6 Visit GitBook provides web publishing and API access for internal or external documentation.
10
Docmost
WebAPISelf-hosted $72 a year Record7.6 Visit Docmost is open-source wiki software for collaborative editing on web and self-hosted installations.
11
Stack Internal
WebAPI Free plan Record7.4 Visit Stack Internal uses web and API access to turn AI tools, chats and wikis into verified knowledge.
12
Hudu
AndroidiPhone & iPadWeb+3 — Record7.4 Visit Hudu is a paid web, mobile and self-hosted knowledge base with API, extensions and SSO.
14
Elium
AndroidiPhone & iPadWeb+3 — Record7.2 Visit Elium is a paid knowledge base for web, mobile, extensions and self-hosted use, with SSO.
16
BookStack
WebLinuxAPI+1 £450 a year Record7.1 Visit BookStack suits people or organizations that want to manage information on their own self-hosted platform.
17
Papyrs
AndroidiPhone & iPadWeb+4 $89 a month, billed yearly Record7.0 Visit Papyrs is a web, desktop and mobile knowledge base with a free plan and API access.
18
TheHelpFlow
AndroidiPhone & iPadWeb+1 $29 a month, billed yearly Record6.9 Visit TheHelpFlow is a paid web and mobile knowledge base with API access, custom domains and SSO.
19
Outline
AndroidiPhone & iPadWeb+3 $10 a month, billed yearly Record6.9 Visit Outline offers paid knowledge publishing on web, Windows, macOS, iOS, Android and Linux, with custom domains.
20
IT Glue
AndroidiPhone & iPadWeb+2 $29 one-time Record6.9 Visit IT Glue suits IT service providers and IT teams that need structured documentation, connected records, and password management.
21
Guru
AndroidiPhone & iPadWeb+2 — Record6.8 Visit Guru provides an internal knowledge base on web, Android and iOS with SSO and version history.
22
Slab
WebWindowsMac $6.67 a month, billed yearly Record6.8 Visit Slab suits teams publishing shared knowledge across web and desktop computers.
Before you choose
Check the pricing path
Pricing models include freemium and paid plans. A free plan can help you start without a subscription, while a free trial gives you a temporary way to evaluate a paid product.
ProProfs Knowledge Base lists a free plan, a paid plan from $0.99 per user per month with annual billing, and a 15-day trial.
Match the publishing audience
Compare where your articles will appear and who can read them. Publishing audience is a listed comparison field, so check whether a tool fits internal documentation, customer help content or both.
Choose a deployment fit
Web access is common in this category. API, self-hosted, Windows, Linux and macOS options also appear, so match the software to your team's systems and deployment needs.
Review access and change controls
SSO support can affect sign-in management for an organization. Version history helps track changes to documentation, so review both fields before choosing a workspace.
Check limits and reporting
Article limits may shape how much documentation you can publish. Custom domains can affect the address readers use, while content analytics can show how published material performs.
Consider source and hosting needs
Open-source products appear alongside hosted freemium and paid services. If you need control over deployment or code, check whether self-hosting and the product's licence match your requirements.
Questions
Do knowledge base tools offer free plans?
Yes. Free plans are available on part of the list, alongside paid plans and free trials.
Can I try paid knowledge base software before subscribing?
Free trials are available for part of the list. Trial length and terms depend on the product.
Which platforms can knowledge base software use?
Listed platform options include web, API, self-hosted, Windows, Linux and macOS.
What comparison fields matter for a knowledge base?
The list compares free plan, paid starting price, publishing audience, article limit, custom domain, SSO support, version history and content analytics.
Is open-source knowledge base software available?
Yes. Open-source products appear on the list alongside freemium and paid software.
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