A good knowledge base gives your team and your customers a central repository. There, they can find reliable answers to their questions through policies, product manuals, and documentation.
Free knowledge base tools are a great way for startups and small companies to provide a basic self-service option to customers without a major investment. Some free tools have limits or trade-offs, but they still work well for smaller teams that want to set up a knowledge base but aren’t ready to invest in a professional customer operations platform yet.
In this article, we’ll round up the best free knowledge base software for B2B support teams, including open-source solutions, freemium SaaS platforms, and all-in-one productivity suites. We’ll also look at how to choose the right solution for your needs and explain what Pylon’s premium knowledge base tool offers.
Free knowledge base tools allow you to create a central source of information and documentation for customers and employees to access without paying for software. They come in a few different categories, each with different costs, maintenance responsibilities, and support use cases:
Some premium knowledge base providers offer free trials, but we’re not including those in this roundup. The tools featured here are free to use for more than just a limited sign-up period.
This guide explores knowledge base software options that best fit the following groups:
These are the advantages of free knowledge base tools:
The best knowledge management tools offer these features:
These are the best free knowledge base solutions for B2B teams, broken into categories by their scope. We chose these tools based on several features:
Information is subject to change. Pricing and plan features were last verified in October 2026.
Each category has its own strengths and weaknesses, including maintenance responsibilities, additional costs, and support use cases.
Open-source platforms (often called wikis) are self-hosted options for knowledge bases. You’ll download free customizable code, but your team is in charge of hosting, securing, and maintaining the wiki, which typically adds a fee to the free software.
MediaWiki is the technology that powers Wikipedia, so it’s a strong choice for creating any kind of wiki. It has a user-friendly interface and a strong community of contributors that keep the code updated.
Best for: Large support teams that need to manage an extensive set of documentation while keeping access to hosting and IT infrastructure.
Watch out for: Extra costs from hosting and maintenance. You’ll also need dedicated engineering support to set it up.
This open-source knowledge base offers version history, RBAC controls, and over 900 extensions to help you build a fully functional help center. It’s highly customizable, but it makes XWiki more complex to set up than plug-and-play software.
Best for: Teams setting up structured technical documentation and needing collaborative editing tools.
Watch out for: Complex configuration, particularly if the knowledge base is large. You’ll also need to host and maintain it externally (which adds costs).
This simple wiki software is suitable for anything from individual note-taking to a full corporate knowledge base. DokuWiki’s platform includes a straightforward interface with access controls, extensions, and multilingual capabilities.
Best for: Simple internal or public-facing documentation, or teams with limited engineering bandwidth.
Watch out for: External hosting and maintenance costs, and setup requires some technical expertise.
BookStack structures its content for books with a hierarchy based on chapters and pages, but a small company’s customer support team can easily use it as a knowledge base tool. You can edit the wiki with Markdown files or the visual editor, and the content you create is fully searchable.
Best for: The book and chapter structure make BookStack ideal for product manuals and technical documentation.
Watch out for: Admin requirements on your team, along with external hosting (like other open-source platforms). Its structure isn’t easy to customize if you don’t want to use the pre-set chapters and pages.
These SaaS platforms will host the knowledge base for you. They all offer free plans, but there are strict usage limits.
This professional knowledge management software from Atlassian offers a free plan that’s limited to ten users and 2 GB of storage. Confluence includes AI-powered tools and integrates natively with other Atlassian products.
Best for: Internal knowledge bases for small teams, particularly those already using other Atlassian products.
Watch out for: Limited access to your knowledge base. On the free plan, only logged-in users have access, which means a maximum of 10 users can review it, and there’s no way to offer public help documentation.
Flowlu offers a functional self-service knowledge base with simple automation, access controls, and team collaboration features. It also includes planning tools like project management and mind mapping, but its free plan is limited to just two users.
Best for: Support teams with a dedicated knowledge base manager.
Watch out for: A lack of public customer support. A free plan doesn’t let you create an External Wiki like paid plans, meaning your customers can’t review information unless you upgrade.
Zoho Desk’s free plan is limited to three users, and it only lets you create an internal knowledge database. You’ll need to upgrade to the paid plan for public, customer-facing support.
Best for: Small teams that are also looking for a free help desk platform.
Watch out for: Large numbers of unavailable features on the free plan. For example, you can directly convert resolved support tickets to knowledge base articles in paid versions of Zoho Desk, but not at the free tier.
These platforms include a knowledge base alongside broader project management tools.
This AI-powered knowledge management system offers a knowledge base alongside productivity, communication, and note-taking apps. Lark is free for up to 20 users, with paid plans for larger teams.
Best for: Teams already using the Lark suite for collaborative work that want to add a simple documentation tool.
Watch out for: Adoption that feels like a system overhaul. Lark is an extensive platform that includes video calls, scheduling tools, and approval workflows, among other offers. If you plan to use those apps, Lark is a good choice, but if all you need is a knowledge base, it might be too broad for your company’s current state.
Notion lets you create a knowledge base through its simple UI, with a block-based database structure. There are paid plans for companies, but the free individual plan lets you try out its features before you commit.
Best for: Small support teams looking for an easy way to create internal or public documentation using an intuitive block-based editor.
Watch out for: Low block limits. The free plan is designed for individuals, and when you have more than one user, you’re limited to 1,000 blocks. Since a block is a unit of content like a paragraph or image, a company knowledge base will reach that limit quickly.
The best free knowledge base software for your team depends on your team’s workflows and needs, not just a feature list. Consider what your team needs now, and think ahead to your long-term knowledge management strategy.
For example, a simple free wiki may work as a quick solution while you get started, but as your company grows, you’ll probably need to expand. A better solution might help you organize articles, collaborate across teams, and create a searchable knowledge base that integrates with AI agents and other customer support software.
If possible, choose a solution that will scale and grow with your team. If you have to choose a quick fix, make sure that you can easily export your data so you can migrate it to a premium platform in the future.
Growing teams often need more sophisticated features, like better search functionality or AI-powered tools to help them create knowledge base content more efficiently.
Freemium SaaS solutions and productivity suites have usage limits, which means investing in a paid plan as your needs grow. For open-source solutions, the hosting and maintenance costs often increase as the knowledge base expands and attracts more users. When a free internal knowledge base’s scale is no longer enough for your team’s size or ticket volume, it’s time to look for a professional knowledge base solution.
Pylon’s AI Knowledge Base helps teams identify gaps in existing documentation from customer conversations and draft new articles using that information. It can also translate knowledge base content into multiple languages for companies growing into international markets.
Then, you can learn from your knowledge base through article activity, search data, and feedback signals. That way, your team can understand what content customers are actually using and where documentation can be improved. For example, if a common ticket query is already covered by a public knowledge base article that readers aren’t finding in search, you can identify and revise the page to make it easier to find. These capabilities help teams create and maintain a centralized source of truth that saves time for everyone.
Learn more about Pylon’s AI Knowledge Base features.
Free knowledge base software is great when you’re starting out, but B2B companies usually need to upgrade to premium tools as they grow. These knowledge base solutions offer advanced features, more integrations, and AI-powered tools to help you create and maintain a database that customers use regularly.
Pylon is the Agentic Support Platform built for B2B support teams. It brings conversations across Slack, Teams, email, chat, and other channels into one place, giving AI the context to help resolve customer issues and continuously improve your knowledge base. Pylon can identify missing or outdated documentation, generate new content from real support conversations, and help your team keep knowledge accurate as your product evolves.
Open-source code is usually free to download and modify, but you’ll still need to pay for hosting, security, and developer time for maintenance.
The free tier of most knowledge base tools limits the number of users or the number of articles you can publish, or you have to use a branded domain instead of your own.
It depends on the platform. Export availability and formats vary by vendor and plan. Make sure that you can export any types of articles, attachments, metadata, permissions, or URLs your knowledge base needs before committing to a smaller plan or a migration.
Public help content can support organic visibility when it answers real customer questions in clear, crawlable language. However, a knowledge base should be created and maintained to help your users, not your search ranking.
An internal knowledge base is a company repository for HR policies, handbooks, and manuals for employees. A customer-facing knowledge base is a publicly available self-service option to answer customers’ questions. Some free knowledge base solutions only support one type
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