Best Free Software Documentation Tools
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Compare the Top Free Software Documentation Tools as of April 2025
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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.
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1
Interfacing Enterprise Process Center (EPC)
Interfacing Technologies
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 -
2
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 securityStarting Price: $39 per month (annual) -
3
GitHub
GitHub
GitHub is the world’s most secure, most scalable, and most loved developer platform. Join millions of developers and businesses building the software that powers the world. Build with the world’s most innovative communities, backed by our best tools, support, and services. If you manage multiple contributors , there’s a free option: GitHub Team for Open Source. We also run GitHub Sponsors, where we help fund your work. The Pack is back. We’ve partnered up to give students and teachers free access to the best developer tools—for the school year and beyond. Work for a government-recognized nonprofit, association, or 501(c)(3)? Get a discounted Organization account on us.Starting Price: $7 per month -
4
ProProfs Knowledge Base
ProProfs
ProProfs Knowledge Base is a knowledge management software used to create highly-searchable online FAQ’s to improve customer service and reduce tickets. ProProfs helps centralize access to all your files, documents and how-to articles ensuring they can be accessed across multiple devices and platforms. Organizations can easily share important information to train their sales, customer service and support teams. It is also an effective method for introducing new hires to company procedures during the onboarding process. ProProfs Knowledge Base improves productivity by making it easy for employees and customers to instantly find what they're looking for, whenever and wherever they need it. ProProfs Knowledge Base Software eliminates the need to answer the same questions over and over again.Starting Price: $6 per user per month -
5
Tettra
Tettra
Tettra is an internal knowledge base with smart workflows to help you answer repetitive questions. Tettra helps you document important processes, policies, and procedures in one centralized place. This makes onboarding new teammates much faster and answering questions less repetitive. Most of our time is spent in cloud apps. As software continues to eat the world, the amount of information we create and the number of tools we use continues to rise. With all this information comes downsides. This fragmentation of tools and teams makes it tough to share context and agree on the best decisions, especially cross-functionally. On growing teams, your best employees shouldn't be bogged down by repetitive questions. To move fast, everyone needs access to the same information and principles. Your internal knowledge base will only be successful if everyone contributes to it. Tettra makes it easy for anyone to contribute knowledge by referencing content in other systems.Starting Price: $99 per month -
6
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 -
7
Xano
Xano
Xano provides a fully-managed scaleable infrastructure to power your backend. On top of that security, you can quickly build the business logic that powers your backend without a single line of code or use one of our pre-made templates to launch quickly without sacrificing scale or security. Build custom API endpoints without a single line of code. Accelerate time to market using our out-of-the-box CRUD operations and Marketplace extensions and templates! Your API comes “ready-to-use” so you can immediately connect to any frontend and focus on your business logic. Everything is also automatically documented in Swagger so connecting to a frontend is a breeze. Xano uses PostgreSQL which provides the flexibility of a relational database along with the Big data needs of a NoSQL solution. Add features to your backend in a few clicks or start with ready-made templates and extensions to jumpstart your project.Starting Price: $29 per month -
8
Dubble
Dubble
Dubble watches how you work, and translates your actions into written step-by-step guides, tutorials, videos and screenshots. Dubble creates instant step-by-step guides, tutorials, and onboarding resources for your processes. You press record and do your thing, as soon as you're done the docs are ready to go. In seconds you can edit descriptions, markup, redact and edit screenshots - or pick completely new screenshots from a video recording. Share with a single click, or invite your team to edit and record guides together. In seconds you can record and send customers, clients, new team members or your mum a Dubble. Copy and paste your guides to wherever your knowledge lives - whether that's Notion, Confluence, Google Docs, Trainual - anywhere that supports rich content or markdown works for Dubble.Starting Price: $4/month/user -
9
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 -
10
Read the Docs
Read the Docs
Spend your time on writing high quality documentation, not on the tools to make your documentation work. Read the Docs simplifies software documentation by automating building, versioning, and hosting of your docs for you. We will host your documentation for free, forever. There are no tricks. We help over 100,000 open source projects share their docs, including a custom domain and theme. Whenever you push code to your favorite version control service, whether that is GitHub, BitBucket, or GitLab, we will automatically build your docs so your code and documentation are never out of sync. We build and host your docs for the web, but they are also viewable as PDFs, as single page HTML, and for eReaders. No additional configuration is required. We can host and build multiple versions of your docs so having a 1.0 version of your docs and a 2.0 version of your docs is as easy as having a separate branch or tag in your version control system.Starting Price: $5 per month -
11
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 -
12
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 -
13
Mintlify
Mintlify
Stop wrestling with outdated documentation. Integrate documentation into your CI/CD to move faster as you scale. Link your documentation with relevant code snippets and owners. Detect when documentation is out of date from code changes or user engagement. Configure alerts to be notified when documentation requires maintenance. Whether it is internal docs on Notion or external docs on ReadMe, we have integrations to support it. Be notified when documentation is out of date or resolve alerts when it has been properly updated. Detect how users engage with your documentation to improve its readability and clarity. Improve code readability without clustering your codebase with comments. Tag documentation ownership to those responsible of the code - or have it automatically detected.Starting Price: $40 per month -
14
Bump.sh
Bump.sh
Bump.sh is the place for API developers to centralize all of their API documentation. Working with REST, Event-Drivent Architecture, or a mix of API technologies? Bump.sh is the only tool on the market that supports OpenAPI/Swagger, AsyncAPI, and soon more (such as GraphQL, SOAP, and gRPC). Plug Bump.sh into your CI, use our CLI, or upload your specification files manually, and benefit from a stunning UI that definitely contrasts with the legacy tools on the market. Enjoy all of the nifty UX details: we know devs will like it, as they were imagined by devs. Unique on the market: every time you publish a new version of your API documentation, Bump.sh automatically detects changes, publishes a changelog, and sends alerts to subscribe readers if the changes break anything.Starting Price: $149 per month -
15
Docuo
Spreading
Docuo is an All-in-one tool documentation platform. It is a SaaS platform that helps you to build a great self-service knowledge base for your customers and internal users (public or private knowledge bases). It can Elevate your team's capabilities with one powerful documentation tool. Eliminate fragmented workflows, consolidate tasks, and supercharge efficiency. Benefits of using Docuo: —AI-Assisted Writing：Docuo Copilot automates documentation writing so developers can focus on coding, not writing. —Cross-Team Collaboration: Enable seamless collaboration so your developers and tech writers can co-create stellar documentation with ease. —Easy-to-use Editor: Intuitively embed images, videos, code and more. Customizable blocks make rearranging content effortless. —Hassle-Free Doc Management: Centralize docs for all products enabling effortless version control. —Publish Docs Sites: Docuo handles optimizations for responsiveness, mobile-friendliness and SEOStarting Price: $31/month/team -
16
Bit.ai
Bit Tech Labs
The World's Most Powerful Workplace and Document Collaboration Platform. Built for teams and individuals to create, collaborate, and organize all your work in one place from anywhere in the world. Create fast dynamic notes, documents, wikis, knowledge bases, projects, client deliverables, training guides and client portals, while integrating across the apps you work with. Organize all your work in one place. Use Bit for smart notes, research, freelance work, client deliverables, classwork & more in one beautiful place. Work with your team, clients, partners or students, regardless of where they are located and collaborate on projects together in real-time. Utilize guest access to bring clients, partners and contractors into your world. Bit scales across your entire organization, regardless of whether everyone is in one location or distributed across the globe. Keep all your company knowledge across departments, teams, projects, and clients organized in one central hub.Starting Price: $8 per user per month -
17
snazzyDocs
snazzyDocs
Create documentation with technical-free writing, and effortless hosting. Write the way you’re used to! Format and style your text just like a word processor. No complicated syntax if you don’t want it. Publish instantly with a single click. Structure chapters, sections and pages effortlessly. Concentrate on your product. With no coding experience required, delegate writing to absolutely anyone! Documentation software with super easy hosting. Use your own custom domain, or create one with us. Choose a theme, add your logo, and customize to match your brand or website. Get help from others on your team. Restrict access, assign roles and user privileges. Easily make documentations private and password protected for internal or personal use. Publish fearlessly knowing previous work is safe and backed up. Download or restore anytime. The documentation software that makes docs easier.Starting Price: $9.99 per month -
18
HelpNDoc
HelpNDoc
HelpNDoc provides all the tools necessary to write complete help files and documentations. From the table of contents to the final documentation layout, everything is included in HelpNDoc. HelpNDoc’s user interface has been carefully designed to be clear and effective, the various tools are grouped using the popular ribbon design first introduced by Microsoft Office, contextual elements such as picture or table editing operations will only appear when needed thus greatly simplifying the overall experience. All the necessary tools needed to create great documentations are built right in HelpNDoc, the table of contents editor, WYSIWYG topic editor, keywords editor and library are some of the features provided to ease-up the process of writing amazing documentations and are an integral part of the HelpNDoc environment. HelpNDoc includes a feature-packed word processor which makes you feel instantly at home.Starting Price: €149.50 one-time payment -
19
Swimm
Swimm
Never let onboarding, knowledge silos, or context switching slow you down. Use Swimm to create and edit docs that are coupled with your code, auto-synced, and integrated into your workflow. Swimm's language agnostic editor, paired with its Smart Tokens and Snippet Studio is the foundation for modern documentation. Build great media-rich docs coupled with the code. Swimm's Auto-sync algorithm, helps your documentation stay in sync through refactoring and reorganization. You don't have to worry about changing file names, function names, or your implementation. Swimm will be able to keep up with it. Swimm checks your docs as your code evolves, and notifies you if your changes affect your documentation. Access docs right next to the code they refer to. Stay in your IDE and your flow. When you click on a link, your IDE will open a new tab with the documentation perfectly rendered from Markdown.Starting Price: $29 per month -
20
Tango
Tango
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.Starting Price: $16 per month -
21
Guidde
Guidde
Create visual documentation your customers and team will love 10x faster. Click capture from our browser extension and go through your workflow, click stop when you’re done. We’ll take it from here. Make it on brand and on-point each time. Record or add text-to-speech voiceover, edit steps in your process, blur sensitive information, and add text, annotations, and custom branding, all with the simplicity of editing a presentation. Share your guidde with one click on any channel. Share internally or externally, and control who you want to have access to. Generate an instant visual article complete with video, images, and text, and embed it in your existing tools like Notion, Zendesk, Salesforce, and many others. Give your customers the personal touch with step-by-step guides they can easily watch and follow without reading through mountains of documentation. Enable anyone in your team to create video-rich guides to explain your product in seconds.Starting Price: $16 per month -
22
Dewstack
Dewstack
Effortlessly craft, manage, and host intelligent docs that respond to user queries in real-time and enhance user engagement and promote self-service. Build amazing user manuals quickly and let your users find answers instantly with our intelligent Q&A feature. Create FAQs quickly, and let our intelligent chatbot provide instant answers to common questions. Use the private workspace to jot down your daily notes, To-Dos, and more. Make it interactive and comprehensive with the Q&A feature. Craft beautiful product docs for your users and stakeholders. Enhance comprehension with our smart, instant answers widget.Starting Price: $29 per month -
23
Balsa
Balsa
Balsa is for organizing ideas, tracking projects, and collaborating with your team. Give it a try and see how it can simplify your workflow! We are huge fans of products like Dropbox Paper and Notion. These products are great for lots of different use cases, but we aim to make a document that is great for making software—with the ability to write specs and put a plan into action in one place. Simplified text formatting that make docs easy to write and a joy to read. Structured modules like milestones that can power views like timelines and rosters. All-in-one workflow from doc to execution without the overhead of out-of-date documentation or switching tools. Balsa visualizes your projects for you - from a bird's eye view, you can see how they might affect each other and the progress of your team overall.Starting Price: $29 per user per month -
24
Redocly
Redocly
Beautiful API documentation loved by teams and API consumers. At last, API documentation your whole team will be proud of. Publish beautiful API reference docs in seconds and style them in minutes. Tick every developer's favorite box right out of the box, three panels, a try-it console, generated code samples, SEO-friendly, even friendlier search. Nobody likes outdated docs and scope creep. Maintain API documentation with your favorite source control integrated with our cloud app workflows. We support them all, including on-premise and API management providers. Launch a developer portal in minutes reusing your API definitions as assets. Add tutorials, quick-start guides, and developer tooling with incredible customization. Validate, lint, and bundle multi-file API definitions. Write always on-spec OpenAPI documents. Plug in your API reference and customize every nook & cranny to wow your API consumers.Starting Price: $69 per month -
25
Supacodes
Supacodes
Supacodes can automatically create & update your code documentation in real-time right into Github. Whenever you push new commits, your updates are processed, and existing docs are updated automatically. Supacodes support Typescript, Javascript, Python, Java, PHP, Dart, C and C++. Frustration with a huge undocumented codebase, never again. No matter how many team members there are, it works. You can edit the documentation generated by the AI. However, the best strategy is to put comments within your code wherever necessary. The AI will analyze your comments as well. You are not charged for lines of codes. It's nothing but a convenient way to compare the usage limits. The actual limitation is upon the token count. You can contact support any time with any problem you have.Starting Price: $17 per month -
26
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 -
27
Corilla
Corilla
A blazing fast markdown editor in the cloud. Built by technical writers to improve the UX of our daily content workflow and remove the complexity of actually writing. Same-page authoring and team draft links. Designed from the ground up to improve the collaboration between writers, developers and the entire organization. Maintain your content in a dedicated repository with powerful search and tagging plus the security of full version control. Freedom from duplicate files or ambiguous version names. Modular content publishing allows you to choose your flavour of topic-based authoring and single sourcing to maximize content re-use. No more dead-end wikis. Your internal documentation has never been more discoverable or dynamic. Company-wide private documentation or role-specific guides for new hires or reporting in just a few clicks. Unlimited documentation hosting with the option of custom domain, integrated publishing to external services or self-hosting.Starting Price: $45 per month -
28
Alphadoc
Alphadoc
Your open API spec is at the core of Alphadoc, create tutorials and intuitive sequence diagrams on top of it. Always in sync with your OAS spec through versioning. We will help you document your SDKs, long code snippets, and entire demo applications. Easily create code walkthroughs, combining API references, variables and more. Interactive docs let developers try out API calls with real data, and from your documentation and guides. With auto-updating endpoints on your pages, you can effortlessly describe API calls without the need for manual copying and pasting. We provide you with the building blocks to create intuitive documentation. You can also embed endpoints, diagrams and code walkthroughs in websites, blogs, or wherever you want.Starting Price: €150 per month -
29
Penify
Penify
Penify automates the software documentation process for Git repositories. Every time a code modification is merged into "main", Penify uses a Large Language Model to generate documentation for the updated code. This automation covers multiple documentation layers, including InCode Documentation, API Documentation, Architectural Documentation, and PR documentation, each designed to improve different aspects of the development process. By taking over the entire documentation process, Penify tackles the common problem of documentation becoming outdated as the code evolves.Starting Price: ₹835 per month per repository -
30
Boggl.ai
Boggl.ai
Enter your seed data & generate a boilerplate for your PRD. Unique links you can assign to your team on Jira. Boggl generates test cases from your user stories. Our prompts are 10-15 lines of specifications to ensure a laser-sharp output with minimal/no hallucinations. Generate a document & keep improving on it with our intuitive iterative AI. Boggl.ai uses industry-standard templates for predictable & standardized outputs. You don't have to redo documentation anymore. Leverage what you have to create other resources. Your data is stored in a secure cloud, not our servers. Continuous checking for vulnerabilities within the system. AI leverages your roadmap to generate a boiler plate for requirements. Add or remove document sections to match your vision. Intuitive & guided experience for document generation & editing. Share documents across organizations through flexi-export. Easy collaboration between team members on docs.Starting Price: $19 per month