Compare the Top Free Software Documentation Tools as of May 2025

What are Free Software Documentation Tools?

Software documentation tools are designed to help developers and technical writers create, manage, and share documentation related to software applications. These tools facilitate the writing of user guides, API references, installation instructions, and other types of technical content. They often include features like version control, templates, collaborative editing, and integration with code repositories to streamline the documentation process. Some popular tools offer support for various output formats, such as HTML, PDF, and Markdown, making it easier to distribute documentation to different audiences. By using these tools, teams can ensure that their documentation remains accurate, up-to-date, and accessible throughout the software development lifecycle. Compare and read user reviews of the best Free Software Documentation tools currently available using the table below. This list is updated regularly.

  • 1
    Interfacing Enterprise Process Center (EPC)
    Interfacing’s Digital Twin Organization software provides transparency and Governance to improve Quality, Efficiency, and ensure Regulatory Compliance. Map, analyze, and automate processes, manage regulatory compliance, assess risks within a single platform! Interfacing’s digital twin solution (Enterprise Process Center - EPC) is an enterprise management system that helps companies digitalize processes to streamline operations, increase productivity, and continuously improve. Interfacing’s digital business platform – Rapid Application Development (RAD) Tools, with its Low-Code Development methodology will optimize usage of your technical resources and maximize transparency for ongoing improvement. Discover how our Low-Code Rapid Application Development module provides all the tools to create and deploy Custom, Scalable, Secure, and Mobile ready Applications in Days vs. Months!
    Starting Price: $10/month/user
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  • 2
    Nuclino

    Nuclino

    Nuclino

    Nuclino works like a collective brain, helping teams bring all their knowledge, docs, and projects together in one place. It's a modern, simple, and blazingly fast way to collaborate, without the chaos of files and folders, context switching, or silos. Nuclino is trusted by over 12,000 teams and companies across the world.
    Starting Price: $5.00/month/user
  • 3
    Process Street

    Process Street

    Process Street

    Process Street is a modern process management platform for teams. We help teams share their core processes, then transform them into powerful no-code workflows. Start with employee onboarding to set up new hires for success, then build all sorts of workflows like customer implementation, content approvals and tenant screening. Manage your team wiki and company handbook 100% free. Join Salesforce, Colliers, Drift and 3,000+ others who use Process Street today.
    Starting Price: $25/month/user
  • 4
    WackoWiki

    WackoWiki

    WackoWiki

    WackoWiki – Small, lightweight, handy, expandable, multilingual Wiki-engine. It's designed for speed and extensibility. WackoWiki is completely free and open source, and it is BSD licensed. Includes a WYTIWYG editor, easy installer, section edit, thumbnail creation, many localizations, RSS autodiscovery, Links can be CamelCase or freely formed links using an intuitive two-character markup. Compatible with PHP 8.0 - 8.4 and MariaDB / MySQL. On-the-fly correction of punctual typos & spec. characters. Access control through per-page access control lists. Automatic table of contents generation. Page watching & email notification on changes/comments. Powerful diff between revisions.
    Starting Price: $0
  • 5
    Zeroheight

    Zeroheight

    zeroheight

    zeroheight helps teams create, manage and maintain their design systems. Using zeroheight, designers, engineers, and product teams can collaborate and build design systems that can be easily shared across teams. Create a centralized repository of styles, tokens, guidelines, code, components, and patterns, integrated and synced between the tools you already use. zeroheight makes maintaining consistency across different products easier and reduces the time and effort needed to stand up new brands and products confidently. We offer features that suit teams from startup to enterprise, from governance to analytics to automation.
    Starting Price: Free
  • 6
    Writerside

    Writerside

    JetBrains

    The most powerful development environment, now adapted for writing documentation. Use a single authoring environment, eliminating the need for a wide array of tools. With the built-in Git UI, an integrated build tool, automated tests, and a ready-to-use and customizable layout, you can focus on what matters most, your content. You can now combine the advantages of Markdown with those of semantic markup. Stick to one format, or enrich markdown with semantic attributes and elements, Mermaid diagrams, and LaTeX math formulas. Ensure documentation quality and integrity with 100+ on-the-fly inspections in the editor as well as tests in live preview and during build. The preview shows the docs exactly as your readers will see them. Preview a single page in the IDE, or open the entire help website in your browser without running the build. Reuse anything, from smaller content chunks to entire topics or sections of your TOC.
    Starting Price: Free
  • 7
    Fluency

    Fluency

    Fluency

    Fluency is the process excellence platform that makes automation accessible to everyone in a business, starting with documentation. Simply hit record and perform the process, Fluency will automatically generate step-by-step documentation. Centralize and secure your processes with Fluency, powered by AWS. Fluency is the first platform that empowers you to extract value from your documented processes. Fluency's feature suite drives your business towards process excellence, starting with documentation. Every business has processes, from compliance-heavy financial services firms to local healthcare providers. Processes often contain important and sensitive information. At Fluency, security is at the forefront of everything we do. Fluency requires no integrations, making it easy to get started. If you have any specific IT requirements, security policies, or team setups, reach out, and we are happy to help get you set up.
    Starting Price: $26.94 per month
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