Best API Documentation Tools

Compare the Top API Documentation Tools as of June 2025

What are API Documentation Tools?

API documentation tools are software tools that help developers create, maintain, and publish documentation for their Application Programming Interfaces (APIs). These tools streamline the process of explaining how to use an API, providing code examples, and outlining endpoints, parameters, and response formats. Many API documentation tools automatically generate docs from the codebase or integrate with frameworks to keep documentation up to date with API changes. They often include interactive features, like live testing or sandbox environments, allowing developers to experiment with API requests directly from the documentation. Ultimately, these tools improve the developer experience by making it easier to understand and use APIs effectively. Compare and read user reviews of the best API Documentation tools currently available using the table below. This list is updated regularly.

  • 1
    Docsie

    Docsie

    Docsie

    Docsie is an award-winning digital documentation and knowledge management platform based in Ontario, Canada. You can access Docsie through a SaaS web application to create & edit documentation from any location. Then, you can publish content to a dynamic knowledge portal that users can access whenever they need information! Docsie offers powerful business-grade features to write & manage product documentation: - Docsie Pilot onboarding - Custom portal design & optional training for paid plans - Internal & external portal for employees & end-users - Workspaces - Knowledge base analytics & user feedback collection - Free custom domain - Markdown import & export - WYSIWYG Editor - iFrame embed - SwaggerAPI import - Snippet, fragment, document & topic templates - Help center & in-app help interface - Guided tour builder - Version & language management - Webhooks - AI translation & content generation - Project management - RBAC/JWT/SSO for security
    Starting Price: $39 per month (annual)
  • 2
    Document360
    Document360 is an AI-powered Knowledge base platform designed to streamline knowledge management in organizations. It helps teams create, manage, and publish content effortlessly, ensuring clarity and accessibility for users. Use Cases Knowledge Base for Customers and Teams: Offer a seamless self-service experience with AI search, auto-tagging, and analytics to boost productivity and reduce support queries. IT Documentation (Including API Docs) Simplify technical documentation with markdown support, version control, and API-friendly features like code embedding and AI-driven insights. Standard Operating Procedures (SOPs) Maintain consistent workflows with centralized SOPs, AI content suggestions, and easy updates for team alignment. User Manuals Deliver user-friendly manuals with customization, localization, and AI tools for faster, polished content.
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    Starting Price: contact us
  • 3
    GitBook

    GitBook

    GitBook

    Document everything. For you, your users and your team. A place to think and track ideas for you & your team. A powerful yet beautifully simple editor that never gets in your way. Embed external web content: videos, code snippets and more. Powerful keyboard & markdown shortcuts to stay productive. Fast, safe, secure and available everywhere. A home for your team, best-practices and thoughts. Draft new changes and collaborate asynchronously. Discuss and review your drafts & changes. Secure and private docs for you and your team. Track everything, view diffs and revert mistakes.
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    Doc-O-Matic

    Doc-O-Matic

    Doc-O-Matic

    Use Doc-O-Matic to effortlessly and reliably create source code and API documentation and author general purpose documentation in a multitude of formats and styles in the shortest possible time. Doc-O-Matic takes source code and comments, adds conceptual topics and external input and produces documentation from it. With its single-source approach, Doc-O-Matic generates many different kinds of output from a single documentation base. Doc-O-Matic produces HTML-based Help files including HTML Help, Help 2, Help Viewer 2.x and browser based Web Help. Doc-O-Matic also creates printable documentation in PDF and RTF formats as well as XML output ideally suited for post-processing. Documentation created with Doc-O-Matic is feature rich out of the box. It provides collapsible and tabbed sections, automatically cross-links the entire documentation, including source code. Your Help bridges the gap, truly integrating into pre-existing library documentation.
    Starting Price: $49 per user
  • 5
    Daux.io

    Daux.io

    Daux.io

    Daux.io is a documentation generator that uses a simple folder structure and Markdown files to create custom documentation on the fly. It helps you create great looking documentation in a developer friendly way. The navigation is generated automatically with all pages that end with .md or .markdown. To sort your files and folders in a specific way, you can prefix them with a number and underscore. Full access to the internal API to create new pages programatically. Work with pages metadata. 100% mobile responsive, 4 built-in themes or roll your own. Functional, flat design style, optional code float layout, and shareable/linkable SEO friendly URLs. Supports Google Analytics and Piwik Analytics. Change the output format. It is recommended you set only formats that support the live mode as this will also be read by the integrated web server. And you set the other formats (like confluence) only by command line.
  • 6
    Docusaurus

    Docusaurus

    Docusaurus

    Save time and focus on your project's documentation. Simply write docs and blog posts with Markdown/MDX and Docusaurus will publish a set of static HTML files ready to serve. You can even embed JSX components into your Markdown thanks to MDX. Extend or customize your project's layout by reusing React. Docusaurus can be extended while reusing the same header and footer. Localization comes pre-configured. Use Crowdin to translate your docs into over 70 languages. Support users on all versions of your project. Document versioning helps you keep documentation in sync with project releases. Make it easy for your community to find what they need in your documentation. We proudly support Algolia documentation search. Building a custom tech stack is expensive. Instead, focus on your content and just write Markdown files. Docusaurus is a static-site generator. It builds a single-page application with a fast client-side navigation, leveraging the power of React to make your site interactive.
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