Free and open first
Best Knowledge Base Software in 2026 — page 2
- 138 apps
- Research read 28 Sept 2026
- How the order is worked out
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Antora
Free plan LinuxMacSelf-hosted+1Choose Antora if you need an open-source generator for AsciiDoc documentation sourced from Git and organized by repository branches.
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Foswiki
Free plan APILinuxMac+3Choose Foswiki if you want a free, self-hosted collaboration platform with structured pages, revision history, and flexible permissions.
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Read the Docs
by Read the DocsFree plan WebRead the Docs covers documentation builds, versioning, search, and previews across its plans. The free Community offering is limited to public projects and ad-supported hosting.
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Helpable
Free plan APIWebHelpable combines customer-facing help content, AI answers, and live chat in one service. The free tier is limited, so compare its answer and team-member allowances with your support volume.
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SwaggerHub
by SwaggerHubFree plan Self-hostedWebSwaggerHub brings API design, documentation, testing, and governance into a set of team tools.
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KBPublisher
Free plan APISelf-hostedWebKBPublisher combines content creation, approval, search, and access controls, with deployment options that include web and self-hosting.
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DocFX
Free plan APILinuxMac+2DocFX covers documentation generation from .NET, REST API and Markdown inputs, with static output and template customization.
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ikiwiki
Free plan LinuxMacSelf-hosted+1ikiwiki offers wiki publishing with static output, optional revision control, and an extensible plugin system. Review its security guidance before allowing other people to edit or upload content.
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TiddlyWiki
by TiddlyWikiFree plan AndroidiPhoneLinux+4TiddlyWiki offers a flexible structure for connected information, with browser-based and server-based ways to run it.
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WikiFlow
Free plan WebWikiFlow combines varied knowledge capture methods with AI drafting and review workflows. Its free plan provides an entry point, while larger teams can use broader plans and destinations.
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Help Scout
by Help ScoutFree plan APIHelp Scout combines shared customer conversations with knowledge-base and workflow tools. Check the Inbox, user, and contact limits against your team's needs before choosing a plan.
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weDocs
Free plan Self-hostedWebweDocs provides WordPress-native documentation with permissions, search and embedding options. Its free plan covers basic creation, while advanced controls and the chatbot require paid options.
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Help.center
Free plan APIWebHelp.center combines public documentation, AI assistance, and ticket handling with free and paid plans.
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Ziikly
Free plan APIWebZiikly combines an internal knowledge base, connected-tool search, and MCP access in one service.
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Docusaurus
by DocusaurusFree plan Self-hostedWebDocusaurus combines documentation-focused authoring, versioning, localization, and search options in a free static-site generator.
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HelpNDoc
Free plan APISelf-hostedWindowsHelpNDoc offers a free personal option and paid editions with broader commercial-use rights and publishing formats.
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Open Knowledge CLI
Free plan APILinuxMac+1Open Knowledge CLI centers knowledge work on plain files, Git workflows, deterministic local search, and agent integrations.