The best knowledge base software in 2026 is Notion for a flexible internal wiki, Confluence for teams already on Jira, Guru for getting answers to staff where they work, and Document360 or Helpjuice for customer-facing help centres. Zendesk, Help Scout Docs and Slab round out the list.
Every business has knowledge stuck in someone's head. How to process a refund, which supplier to call, what to say when a customer asks about delivery. When that person is off sick, everything slows down.
Knowledge base software gives that knowledge a home. There are two kinds: internal wikis for your team, and help centres for your customers. Some tools do both. Here are eight well-established options. I've stuck to what each is known for, so treat this as a shortlist to trial.
What does knowledge base software do?
- Stores documents and how-tos in one searchable place.
- Organises content into categories, collections or spaces.
- Controls access so the right people see the right pages.
- Keeps content fresh with owners, review dates or verification.
- Publishes help centres for customers, in customer-facing tools.
- Uses AI search to answer questions from your own content, in many tools now.
Internal wiki or customer help centre?
Decide this first, because it changes the shortlist. If your goal is fewer repeated questions from staff, you want an internal wiki such as Notion, Confluence, Guru or Slab. If your goal is fewer support tickets from customers, you want a help centre such as Document360, Helpjuice, Zendesk or Help Scout Docs.
Knowledge base software compared
| Tool | Type | Best for |
|---|---|---|
| Notion | Internal wiki | Flexible docs and wikis |
| Confluence | Internal wiki | Teams using Jira |
| Guru | Internal knowledge | Answers inside the tools staff use |
| Slab | Internal wiki | A clean, simple team wiki |
| Document360 | Customer help centre | Dedicated product documentation |
| Helpjuice | Help centre and internal | Customisable knowledge bases |
| Zendesk | Customer help centre | Businesses using Zendesk support |
| Help Scout Docs | Customer help centre | Small teams using Help Scout |
Plans change often, so confirm the current terms on each site before you commit.
The best knowledge base software
1. Notion
Notion is a flexible workspace for documents, wikis and databases. Many small businesses use it as their internal wiki, and pages can also be published to the web.
Who it suits: small teams that want one flexible place for docs, processes and notes.
What stands out: flexibility. You can shape it to fit how your business works, and its AI features can answer questions from your workspace.
Watch out for: the flexibility cuts both ways. Without a clear structure, it can turn messy fast.
2. Confluence
Confluence is Atlassian's team wiki and documentation tool. It works closely with Jira, so product and technical teams often use the two together.
Who it suits: teams already using Jira or other Atlassian tools.
What stands out: structure and permissions, which suit larger or more technical teams.
Watch out for: it can feel heavy for a very small business that just wants a few how-to pages.
3. Guru
Guru is a knowledge tool that brings answers to staff inside the apps they already use, such as their browser and chat tools. Content is verified by experts on a schedule, so staff can trust it.
Who it suits: sales and support teams who need quick, accurate answers mid-conversation.
What stands out: verification. Each card has an owner and a review date, which stops the wiki going stale.
Watch out for: it's built for internal knowledge, not public help centres.
4. Slab
Slab is a team wiki designed to be simple and clean, with a focus on writing and finding knowledge. It connects to other tools so search can cover them too.
Who it suits: teams that want a tidy internal wiki without the complexity of bigger tools.
What stands out: readability. Pages look clean and are easy to write.
Watch out for: it does fewer things than Notion. That's the point, but check it covers what you need.
5. Document360
Document360 is a knowledge base platform built for public help centres and product documentation, with an internal option as well. It includes versioning, categories and analytics.
Who it suits: software companies and product teams publishing help docs for customers.
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What stands out: documentation features such as version history, a structured editor and search analytics.
Watch out for: it's a dedicated tool, so it's best when documentation is an important part of your product.
6. Helpjuice
Helpjuice is knowledge base software for customer help centres and internal knowledge. It's known for how much you can customise the look of your knowledge base.
Who it suits: businesses that want a branded help centre that looks like the rest of their site.
What stands out: customisation and analytics that show what people search for.
Watch out for: the customisation takes some setup time.
7. Zendesk
Zendesk includes a help centre as part of its customer service platform. Articles can be suggested to customers and to agents while they answer tickets.
Who it suits: businesses already using Zendesk for support.
What stands out: the link between articles and tickets. Common questions get deflected before they reach your team.
Watch out for: it makes most sense as part of Zendesk. On its own, a dedicated tool may suit you better.
8. Help Scout Docs
Docs is the knowledge base in Help Scout. You can publish help articles and show them to customers through Help Scout's Beacon widget on your site.
Who it suits: small teams using Help Scout for customer email.
What stands out: simplicity. It's easy to publish and easy for customers to use.
Watch out for: it's lighter than dedicated documentation platforms.
How do you choose knowledge base software?
- You want a flexible internal wiki: Notion or Slab.
- You use Jira: Confluence.
- Your team needs answers mid-conversation: Guru.
- You publish product documentation: Document360.
- You want a branded help centre: Helpjuice.
- You already use a help desk: Zendesk or Help Scout Docs.
How do you build a knowledge base people use?
- Start with the ten questions you answer most often. Write those first.
- Give every page an owner and a review date.
- Write titles as questions, the way people search.
- Keep pages short. One task per page.
- Link to the knowledge base from every answer you give, so people learn to look there first.
If you're planning to use your knowledge base with AI, my RAG knowledge base prep checklist covers how to get content ready. For customer-facing help, my guide to AI customer service bots shows how a good knowledge base powers them, and cloud tools for remote teams covers the rest of the stack.
Building a tool in this space? Here's how tools get considered for my roundups.
Frequently asked questions
What is the best knowledge base software for a small business?
Notion and Slab are simple internal wikis, Guru suits teams that need verified answers, and Document360 or Helpjuice suit customer help centres.
What's the difference between a wiki and a knowledge base?
A wiki is usually an internal, editable space for a team. A knowledge base can be internal or public, and is often more structured, like a help centre.
Can I use Notion as a knowledge base?
Yes. Many small businesses use Notion as an internal wiki, and pages can be published publicly. It needs a clear structure to stay tidy.
Do knowledge bases use AI?
Many now include AI search or assistants that answer questions using your own content.
How do I keep a knowledge base up to date?
Give each page an owner and a review date, and update pages whenever a process changes.
