Picking the best wiki software comes down to one question most roundups skip: who reads the wiki? An internal team wiki and a public-facing docs site have almost nothing in common under the hood, yet they get lumped together constantly. This guide splits the 10 tools by that line so you stop comparing apples to API references.
If you are still deciding whether a wiki is even the right shape for your knowledge, start with what a wiki actually is and how it differs from a knowledge base. Already sure? Then the question is which wiki software fits your team, your budget, and how much setup you can stomach. We tested or verified pricing on each tool below as of mid-2026.
What to look for in wiki software
Before the list, four things separate a wiki you will actually use from one that rots in a forgotten tab:
- Audience fit. Internal-only (team notes, runbooks) versus public (customer docs, a help center). Few tools do both well.
- Setup cost. Self-hosted open-source tools are free to license but cost you a server and an afternoon. Hosted SaaS trades money for zero ops.
- Per-seat math. Most wiki tools charge per user per month. A 15-person team at $8/user is $1,440/year before anyone writes a page.
- Search and structure. A wiki is only as good as your ability to find things in it six months later.
Comparison table
| Tool | Pricing (2026) | Best for | Key feature |
|---|---|---|---|
| Docsio | Free (1 site) / $60 per site/mo | SaaS founders + small teams wanting a public docs site | AI builds the whole site from your URL |
| Notion | Free / ~$10 per user/mo | All-in-one internal workspace | Docs + databases in one place |
| Confluence | From ~$5.42 per user/mo | Enterprise internal wikis on Atlassian | Deep Jira integration |
| GitBook | ~$65 per site + ~$12 per user/mo | Developer + product documentation | Git-synced docs |
| Slab | ~$6.67 per user/mo | Mid-size team knowledge | Clean editor + integrations |
| Nuclino | ~$6 per user/mo | Small teams, fast internal notes | Lightweight, instant search |
| Slite | ~$8 per user/mo | Remote-first team wikis | AI answers from your docs |
| Tettra | ~$4-8 per user/mo | Internal Q&A wikis | Knowledge verification workflow |
| BookStack | Free (self-hosted) | Self-hosted structured wikis | Shelves/books/chapters model |
| MediaWiki | Free (self-hosted) | Massive public wikis | Powers Wikipedia, infinitely scalable |
1. Docsio: best wiki software for SaaS founders and small teams
Docsio is the fastest way to put a public-facing wiki or docs site online without touching code or a template. You paste your product URL, the AI reads your site, extracts your branding, and generates a full documentation site with real content in minutes. From there you edit pages with an AI agent in a live preview and publish with one click.
Where most wiki software hands you a blank editor, Docsio hands you a working draft. That gap matters when you are a founder who needs customer docs live this week, not a wiki project that drags for a month. The AI generation flow handles structure, copy, and styling so you start from something instead of nothing.
Strengths: No setup, no servers, no template wrangling. Custom domains with SSL on every plan, full-text search, AI chat widget, and an auto-generated llms.txt so AI tools can read your docs. Honest pricing: $60 per site per month on Pro versus the $300-plus a comparable hosted docs stack runs once you stack seats.
Pricing: Free tier with 1 site, custom domain, brand extraction, and 5 AI edits a month. Pro is $60 per site per month for unlimited AI edits, password protection, versioning, and the MCP server.
Best for: SaaS founders, indie hackers, and small teams who want a polished public docs or wiki site without the manual build. If your wiki has customers on the other end, start here.
2. Notion: best all-in-one internal workspace
Notion blends wiki pages with databases, so a single workspace can hold your team handbook, project tracker, and meeting notes. The flexibility is the draw and the trap: it does many jobs adequately rather than one job perfectly. For an internal team wiki it is hard to beat on versatility.
Strengths: Endless customization, strong templates, and a free tier generous enough for solo use and tiny teams.
Pricing: Free for personal use. Paid plans run roughly $10 per user per month, which adds up fast on a 20-person team.
Best for: Teams that want notes, docs, and lightweight project management under one roof. Less ideal as a clean public docs site, which is where a Notion alternative often wins.
3. Confluence: best for enterprise internal wikis
Confluence is the default corporate wiki, especially for teams already living in Jira and the rest of Atlassian. It scales to thousands of users with permissions, spaces, and governance that smaller tools skip. That power comes with a learning curve and an interface that feels heavier than a startup needs.
Strengths: Mature permissions, deep Jira and Atlassian integration, and proven at enterprise scale.
Pricing: Starts around $5.42 per user per month and climbs with premium tiers and add-ons.
Best for: Larger internal teams inside the Atlassian ecosystem. If that is not you, a lighter Confluence alternative usually wins on speed and price.
4. GitBook: best for developer documentation
GitBook targets product and developer docs, with Git sync so engineers can edit content in the same flow as code. Pages look clean out of the box, and the publishing experience is solid. The pricing model is the catch: it charges per site and per user, so costs stack quickly for a growing team.
Strengths: Git-based editing, clean public output, good for API and product docs.
Pricing: Roughly $65 per published site plus about $12 per user per month. A 10-person team with two sites can clear $700 a month.
Best for: Engineering-heavy teams that want docs tied to their repos. See how it stacks up on our GitBook comparison.
5. Slab: best for mid-size team knowledge
Slab is a clean, hosted team wiki with a focus on a pleasant writing experience and integrations with tools like Slack and GitHub. It sits between Notion's sprawl and Nuclino's minimalism, aimed at teams that want structure without enterprise bloat.
Strengths: Polished editor, good search, integrates with the tools teams already use.
Pricing: Around $6.67 per user per month on annual billing, with a limited free tier.
Best for: Growing teams that have outgrown scattered Google Docs but do not need Confluence-grade governance.
6. Nuclino: best lightweight internal wiki
Nuclino is built for speed. Pages open instantly, search is fast, and a graph view shows how documents connect. It deliberately skips heavy features to stay simple, which is exactly why small teams like it for internal notes and runbooks.
Strengths: Very fast, low learning curve, clean interface, and graph and board views.
Pricing: Around $6 per user per month on the Standard tier; a free tier covers small workspaces.
Best for: Small teams that want a no-friction internal wiki and do not need a public-facing site.
7. Slite: best for remote-first teams
Slite leans into asynchronous, remote work with an AI assistant that answers questions using your own documents. It keeps the writing experience focused and adds knowledge-management touches like verification reminders so docs do not go stale.
Strengths: AI answers grounded in your content, clean async-friendly design, decent search.
Pricing: Around $8 per user per month for the standard plan, with a free starter tier.
Best for: Distributed teams that need a single source of truth and lean on async communication.
8. Tettra: best for internal Q&A wikis
Tettra pairs a simple wiki with a Q&A workflow and integrates tightly with Slack, so questions get answered once and saved forever. Its verification feature flags content for periodic review, which keeps an internal knowledge base trustworthy.
Strengths: Slack-native Q&A, content verification, low complexity.
Pricing: Roughly $4 to $8 per user per month depending on tier, often with a seat minimum.
Best for: Slack-centric teams that want to turn repeat questions into a maintained internal wiki.
9. BookStack: best free self-hosted wiki
BookStack is open-source and free to run on your own server. Its standout idea is structure: content lives in shelves, books, chapters, and pages instead of a flat pile of documents. That hierarchy makes a self-hosted wiki feel organized from day one.
Strengths: Free license, clear structure, self-hosted control over your data.
Pricing: Free. You pay only for hosting and the time to set it up and maintain it.
Best for: Technical teams comfortable running their own server who want a tidy internal wiki without per-seat fees. New to self-hosting? Read how to create a wiki first.
10. MediaWiki: best for massive public wikis
MediaWiki is the engine behind Wikipedia, which tells you everything about its ceiling. It scales to enormous public knowledge bases with deep history, templating, and extensions. The trade-off is that it is built for scale, not for a five-person team that wants a quick docs site.
Strengths: Battle-tested at the largest scale, endlessly extensible, fully open-source.
Pricing: Free. Plan for real server resources and admin time at scale.
Best for: Large public or community wikis with thousands of contributors and pages.
How to choose the right wiki software
Match the tool to the reader, not the hype:
- Public docs for a SaaS product: Docsio. It builds the site for you and stays affordable as you grow.
- Internal all-in-one workspace: Notion or Slab for flexibility, Nuclino for speed.
- Enterprise internal wiki: Confluence, especially with Jira in the mix.
- Developer docs tied to code: GitBook.
- Free and self-hosted: BookStack for structure, MediaWiki for massive scale.
For a deeper look at internal-only options, our guide to company wiki software goes further on team use cases. The short version: if your wiki is customer-facing, a hosted AI builder like Docsio saves you the most time and the most money.
Frequently asked questions
What is the best free wiki software?
For a public docs or wiki site, Docsio's free tier is the easiest start: one site, a custom domain with SSL, brand extraction, and live publishing with no servers to manage. For self-hosted internal wikis, BookStack and MediaWiki are free open-source options, though you supply the hosting and maintenance yourself.
What is the cheapest wiki software for small teams?
Docsio is among the cheapest for a public-facing wiki at $60 per site per month flat, versus competitors that often exceed $300 once you add seats. For internal-only wikis, Nuclino and Tettra start near $4 to $6 per user monthly. Truly free options exist if you self-host BookStack or MediaWiki.
What is the difference between a wiki and a knowledge base?
A wiki is collaborative and editable by many people, built for evolving team knowledge that anyone can update. A knowledge base is usually a more curated, structured set of articles aimed at answering specific questions, often for customers. Many modern tools blur the line and handle both jobs from one platform.
Is Notion good wiki software?
Notion works well as an internal team wiki because it combines documents, databases, and templates in one flexible workspace. It is less suited to polished public documentation sites, where the output looks more like an app than a docs site. Teams needing customer-facing docs often pair or replace it with a dedicated docs tool.
What wiki software does Wikipedia use?
Wikipedia runs on MediaWiki, the open-source engine purpose-built for massive, multi-contributor public wikis. It powers other large sites like wikiHow and Fandom too. MediaWiki is excellent at scale but heavier than most small teams need, which is why hosted tools are usually a better fit for a quick company or product wiki.
Start your wiki in minutes
If your wiki faces customers, you do not need to spend a month wiring up a template and a server. Paste your URL into Docsio and get a branded, searchable docs site generated by AI, then edit and publish in one click. The free plan covers one site with a custom domain, so you can launch today and upgrade only when you grow. Try Docsio free.