Best Free Software Documentation Tools

Interfacing’s Integrated Management System (IMS) is an AI-powered platform that unifies BPM, QMS, Document Control, and GRC into one platform. Organizations use IMS to model and automate processes, control documents, manage risks, and maintain regulatory compliance with full traceability and audit readiness. Built for highly regulated sectors such as aerospace, life sciences, finance, and government, IMS provides real-time visibility, automated workflows, and AI-driven insights that improve quality and reduce operational risk. The platform is ISO 27001 certified and fully validated for 21 CFR Part 11, making it suitable for mission-critical environments requiring strong governance, security, and control. IMS also includes low-code automation, process mining, audit management, training tracking, CAPA workflows, and dashboards to help teams streamline operations and continuously improve. AI strengthens governance, improves accuracy, and reinforces regulatory control.

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.

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.

Catch up on your documentation, cut down on meetings and interruptions, and save hours every week. We’ll automatically create a step-by-step guide with perfectly cropped screenshots, links, and annotations. Blur out sensitive information, add annotations, draw freehand, or customize your logo and colors. Publish your guide to multiple knowledge bases with one click, share a direct link, or export to PDF, HTML, or Markdown. You click through your process. Tango does the documenting. Create 10 how-to guides in the time it used to take to do one. Say goodbye to long videos and walls of text. Tango turns any process into a beautiful, shareable how-to guide. Document steps on any website or software. Tango with all your favorite tools. Highlight what's important with an arrow, rectangle, circle, or text. Or draw anything you can imagine with the freehand pen. Resize images to focus on what matters and cut what doesn’t.