The 12 Best Company Wiki Software Tools for 2026

Your company's knowledge exists somewhere. The problem is nobody knows where. Critical information lives scattered across Google Docs, buried in Slack threads, and locked in employees' heads who might leave tomorrow.

Employees spend nearly 20% of their workweek looking for internal information, according to McKinsey research.

The right platform balances search functionality, WYSIWYG editing, access controls with role-based permissions, integrations with tools like Slack and Jira, version history, and real-time collaboration. Here's a breakdown of 12 wiki tools for 2026: what they do well, what they cost, and where they fall short.

The 12 Best Company Wiki Software Tools

Each platform below serves different team sizes, technical requirements, and budgets. We've verified pricing directly from vendor websites and included the specific limitations that sales pages often downplay.

1. Notion

Notion combines wikis, databases, and project management into a flexible all-in-one workspace. The block-based editor lets teams build anything from simple docs to complex databases with drag-and-drop organization. Synced Blocks let you edit content once and update it everywhere, eliminating version control headaches. The database capabilities let you track projects, documentation, and workflows in customizable views.

Here's the catch: Free tier limits team workspaces to 1,000 blocks. Full AI features require the Business plan; Plus only includes a limited trial.

Pricing: Free (limited blocks for teams), Plus at $10/user/month (annual), Business at $20/user/month (annual) with full AI, Enterprise custom pricing.

Best for: Teams wanting an all-in-one workspace who can commit to paid plans for team collaboration.

2. Confluence

Confluence dominates enterprise documentation, particularly for organizations already in the Atlassian ecosystem. Native Jira integration makes it valuable for dev teams, and Rovo AI lets you search across connected tools and generate content. The Premium tier provides 1,000 automation runs per user monthly and 24/7 priority support. For larger organizations exceeding 200 users, the Enterprise tier offers multiple instances (up to 150 sites per product) and unlimited automation.

Here's the catch: Practitioners report it "usually turns into a junk drawer unless someone owns the structure." Search and navigation degrade as content volume grows.

Pricing: Free (up to 10 users), Standard at $5.42/user/month (annual), Premium at $10.44/user/month (annual) with 99.9% uptime SLA, Enterprise custom pricing.

Best for: Organizations already using Atlassian tools or needing deep Jira integration.

3. Document360

Document360 specializes in analytics-driven documentation for both internal teams and customer-facing knowledge bases. You'll find detailed insights into content performance, search behavior, and user engagement. AI capabilities include automated content generation, intelligent search, and auto-translation to over 40 languages. The platform uses project-based pricing rather than per-user costs, making it cost-effective for larger documentation teams.

Here's the catch: Pricing requires sales engagement—no independent cost analysis possible. The Professional tier excludes embedded help centers, custom workflows, and API access.

Pricing: Quote-based across Professional, Business, and Enterprise tiers. Contact sales for specific pricing. 14-day free trial available.

Best for: Teams prioritizing documentation analytics and needing both internal and customer-facing knowledge bases.

4. Nuclino

Nuclino differentiates itself through visual knowledge organization, particularly its graph view, displaying content relationships as an interconnected network. The platform offers list, board, table, and graph views alongside built-in canvas features for diagramming. The interface is minimalist by design, focusing on essentials without clunky menus.

Here's the catch: Free tier caps teams at 50 items and 2GB storage. SAML SSO, audit logs, and unlimited version history require Business tier.

Pricing: Free (50 items, 2GB storage), Starter at $6/user/month (annual), Business at $10/user/month (annual) with AI features and SAML SSO.

Best for: Teams prioritizing visual knowledge mapping over traditional hierarchies.

5. Slab

Slab’s signature capability is unified cross-platform search that queries Slab content alongside Slack and Google Drive simultaneously. No more searching each system separately. The Free tier supports up to 10 users with 10MB attachment storage and a 90-day version history.

Here's the catch: No read-only accounts. Access control is content-based, not user-role-based, which can increase costs for teams needing view-only users.

Pricing: Free (up to 10 users), Startup at $6.67/user/month (annual), Business at $12.50/user/month (annual) with SAML SSO and SCIM provisioning, Enterprise custom pricing.

Best for: Teams needing unified search across multiple platforms.

6. Guru

Guru uses a card-based system with built-in verification workflows, ensuring content stays accurate over time. The platform monitors knowledge assets and prompts designated experts to verify content at customizable intervals. AI capabilities include Knowledge Agent Chat for conversational access to company knowledge, Research capabilities synthesizing information from verified sources, and Enterprise AI Search aggregating answers across all connected systems with permission-aware results.

Here's the catch: 10-seat minimum creates a barrier for smaller teams. The interface is English-only.

Pricing: Self-serve at $25/user/month (annual, 10-seat minimum) or $30/user/month (monthly), Enterprise custom pricing with a dedicated success manager and advanced governance controls.

Best for: Accuracy-critical operational knowledge like support scripts and compliance procedures.

7. Tettra

Tettra provides native Slack integration with an AI bot (Kai) that delivers answers directly in Slack channels and DMs. Kai pulls answers from connected Google Workspace files, mines historical Slack conversations, and generates FAQs from existing content. The platform includes unlimited storage and unlimited version history across all plans, eliminating storage concerns that plague other platforms.

Here's the catch: 10-user minimum required. Formatting limitations create challenges for technical documentation, and the interface is English-only.

Pricing: Scaling at $8/user/month (annual, 10-user minimum) with AI features and usage analytics, Enterprise custom pricing with SSO and SCIM included.

Best for: Slack-centric organizations of 10-100 people.

8. GitBook

GitBook targets developer documentation with native Git synchronization to GitHub and GitLab across all pricing tiers, including the free tier. Two-way sync lets teams edit in their IDE or GitBook's visual interface. The platform is explicitly positioned for public technical documentation and API documentation.

Here's the catch: Authenticated access for internal wikis requires the Ultimate tier. No self-hosting option available.

Pricing: Free (1 user, gitbook.io domain), Premium at $65/site/month + $12/user/month (custom domain, AI answers), Ultimate at $249/site/month + $12/user/month (authenticated access, cross-site search), Enterprise custom pricing.

Best for: Developer-facing API documentation and public technical docs.

9. MediaWiki

MediaWiki powers Wikipedia and provides a mature, extensible platform for organizations comfortable with self-hosting. Version 1.45.0 (December 2025) requires PHP 8.2.0+ and supports MySQL, PostgreSQL, or SQLite. It's free and open-source, eliminating per-user costs.

Here's the catch: Designed "to be as open as possible" rather than for protecting sensitive data. Requires DevOps resources for deployment and ongoing maintenance.

Pricing: Free and open-source. Costs include hosting infrastructure and maintenance resources.

Best for: Organizations with DevOps resources who need free, extensible wiki software and don't require strict access controls.

10. Wiki.js

Wiki.js offers a modern, Node.js-based platform with five database backend options and extensive authentication (LDAP, SAML, OAuth, etc.). The platform provides Markdown editing with live preview and a WYSIWYG visual builder for non-technical users.

Here's the catch: AGPL-v3 license requires legal review for custom modifications. Several advertised features (API Docs editor, cloud storage integration) remain "Coming Soon."

Pricing: Free and open-source (AGPL-v3 license). Costs include hosting infrastructure and technical deployment resources.

Best for: Technical teams wanting modern self-hosted platforms with Node.js expertise.

11. BookStack

BookStack uses a four-level content hierarchy: shelves, books, chapters (optional within books), and pages, designed to mirror the organization of physical books placed on shelves. The platform supports OIDC, SAML2, and LDAP authentication. Built on PHP and Laravel, BookStack can run on minimal infrastructure like a $5 DigitalOcean VPS. The MIT license permits personal and commercial use without restrictions, offering more permissive terms than AGPL-licensed alternatives.

Here's the catch: A fixed four-level hierarchy may limit flexibility. Test before committing to ensure it matches your team's mental model.

Pricing: Free and open-source (MIT license). Minimal infrastructure costs for self-hosting.

Best for: Teams comfortable with self-hosting who prefer hierarchical organization and permissive licensing.

12. Helpjuice

Helpjuice offers advanced analytics, including content impact tracking, productivity insights, and search behavior, across all three pricing tiers. AI-powered features, including AI Writer, AI Search, and AI Chatbot, are available on higher tiers. The platform supports both internal and customer-facing knowledge bases within a single instance. Organizations receive one knowledge base per plan, but can utilize private and internal sections with access control to separate content.

Here's the catch: Both content creators and internal viewers count as paid users. Storage caps range from 12-38GB across tiers.

Pricing: Knowledge Base at $249/month (30 users, 12GB), AI-Knowledge Base at $449/month (100 users, 24GB, full AI Suite), Unlimited AI-Knowledge Base at $799/month (unlimited users, 38GB).

Best for: Organizations prioritizing documentation analytics and customization that can justify premium pricing.

How Do You Choose the Right Wiki Software?

Start with team size and technical capabilities, then determine whether you need internal-only documentation or customer-facing knowledge bases. Tools like Document360 and Helpjuice handle both, while BookStack focuses on internal use. Organizations under 50 people often succeed with Nuclino or Tettra; larger teams typically need Confluence or Document360. If your organization uses Atlassian tools, Confluence's native Jira integration provides substantial value.

For Slack-centric teams, Tettra offers the deepest integration. Self-hosted options like Wiki.js or BookStack eliminate per-user costs but require dedicated DevOps resources.

Turn Your Wiki Into On-Demand Support

The right wiki depends on team size, technical resources, and whether you need internal or customer-facing documentation. Notion and Nuclino suit smaller teams; Confluence and Document360 scale for enterprise.

Choosing the right wiki solves storage issues, but cross-departmental requests require more than documentation. Siit automates workflows directly in Slack and Teams, integrating with Notion and Confluence to surface relevant articles automatically when employees ask questions. Instead of hoping employees search the wiki themselves, Siit's AI pulls the right documentation and delivers it in the flow of work.

Start your free trial to turn static documentation into on-demand support.