10 Best Knowledge Base Software in 2023 (Free & Paid)

Josh Spilker
August 12, 2023
best knowledge base software

TL;DR: Tettra is the top choice for a knowledge base for growing teams because of its simplicity, AI search, and user-friendly page editor. Other options include Confluence and Zendesk.

1. Tettra

The best knowledge base software is Tettra because of its search functionality, Slack/MS Teams integration, and intuitive UI. It possesses all of the important attributes in a knowledge base solution. 

It has strong search and content management functionalities; it has good access and permission controls; it integrates with popular enterprise apps like Slack and Google Docs; all wrapped up in an easy-to-use interface that is intuitive even for non-technical users.


  • Instant answers with AI, directly from your company knowledge
  • Intuitive interface
  • Native Slack and MS Teams integration
  • Less learning curve
  • Unique knowledge management features 
  • Q&A features


  • Lacks support for forums / discussion boards
  • Limited document formatting

Tettra makes knowledge sharing easy by making their experience seamless and easy to use, even if you have never done any documentation before! You can get started without needing any expertise in Knowledge management and even share docs directly in communication channels like Slack to better promote your referenced information.



  • Basic: Starting at $4 per user/month
  • Scaling: Starting at $8 per user/month
  • Professional: Starting at $12 per user/month


2. Confluence

Confluence is a wiki software platform designed for knowledge management. It is the oldest wiki solution, having launched in 2004 but still remaining strong today.

Its popularity lies in its flexibility. The software includes an internal wiki, collaboration tools, and even a project management app. Confluence uses “spaces”, which are essentially workspaces for teams. Each space can house its own knowledge base, documents, project trackers, and more. 

Other key knowledge base features are anonymous access, page-level analytics, and integration with other JIRA software tools.

As of 2023, Confluence has four price tiers: free, standard, premium, and enterprise. Need more options? Check out these Confluence alternatives.

3. Zendesk

Popularly known for its helpdesk solution, Zendesk offers a knowledge base tool that can be adapted for customers, internal use, support agents, and IT. The interface is lean and easy to use, and the software boasts AI and machine learning, analytics, and community forums support. 

Content can be translated to over 40 languages for localization, and the product can also be customized to match the company’s branding.


  • Hootsuite
  • HubSpot
  • JIRA
  • MS Teams
  • Salesforce
  • Slack
  • Shopify

4. Bloomfire

Like Zendesk, Bloomfire has AI search capabilities and crowd-sourced FAQ contributions. What sets it apart is its social media-like interface: users can like, comment, and follow entries. 

Bloomfire interface

Other features include auto-tagging, usage and content reporting, and API access for customized applications.


  • Dropbox
  • MS OneDrive, Teams and Dynamics 365
  • Salesforce
  • Slack
  • Tableau
  • Zendesk

5. Guru

The key feature that distinguishes Guru from its competitors is that it unifies contextual information from productivity tools like the organization’s CRM, emails, and messaging apps. The contextual knowledge and relevant suggestions also improves over time, once the AI establishes individual and company-wide patterns.

Guru is primarily designed as an internal knowledge base, but the API can be modified to turn into an customer-facing knowledge portal. Want more Guru alternatives?


  • Azure
  • Confluence
  • Gosquared
  • Google Suite
  • Livechat
  • MS Onedrive and Teams
  • Salesforce
  • Slack
  • Scribe
  • Workramp
  • Zapier
  • Zendesk

6. Stack Overflow for Teams

Mostly known among developers, Stack Overflow now offers its iconic question and answer interface as internal knowledge base for enterprise use with the Stack Overflow for Teams.

The app possesses the same attributes that made its parent portal a huge hit with the dev community, including the answer ranking system and clean interface. 


  • Github
  • JIRA
  • MS Teams
  • Okta
  • Slack

7. Document360

Document 360 is both a knowledge base and file manager in one. It includes several content management features like a markdown editor, version control, secure file management, and user feedback.

Other features include community forums, SEO and analytics, and a self-service portal.


  • Drift
  • Disqus
  • Intercom
  • Livechat
  • MS Teams
  • Olark
  • Salesforce
  • Slack
  • Zapier
  • Zendesk

8. Notion

This flexible app can function as a knowledge management tool, project management software, or collaborative writing space. It’s geared more towards internal use and lacks many of the features possessed by dedicated customer-facing solutions. It has a markdown editor, categorization, and content management. While it can be repurposed for knowledge management, setting the right admin settings on different pages can get wonky. It’s hard to force it to do something it wasn’t built for.


  • Asana
  • Dropbox
  • Github
  • Google Drive
  • JIRA
  • Slack
  • Zapier
  • Zoom

9. Nuclino


Nuclino is an internal knowledge base and fan favorite due its clean user interface and intuitive navigation. Criticisms often leveled at bigger tools can generally be avoided with Nuclino since those two features are a strength. Nuclino even supports real-time editing so users can work together on the same document without any issues.

10. HelpJuice

This prototypical external knowledge base has a lot to offer with its dynamic and design-oriented editor, allowing you to customize typeface, palette, and layout according to your company’s branding. Users and customers can go directly to it for answers.

When you really need help fast – technical support teams are just a few clicks away as shown by its impressive G2 rating (an impressive 4.2 out of 5)!

However, its one major setback lies in pricing structure. There aren’t any freemium options and prices start from $120 per month for a base team of four users.


  • Slack
  • Chrome
  • Salesforce
  • Olark
  • Zapier
  • Teams
  • Freshdesk

What should you look for when selecting an internal knowledge base?

Think about these 5 factors when evaluating your next knowledge base.

1. Does it have a good search function?

A knowledge base is only as good as its search capability. To be effective, it should be able to answer the query posed by the employee or customer accurately. To do this, it should ideally support deep searches, and make use of detailed search parameters.

2. How is the knowledge base UI?

The software or portal must be easy to use and have an intuitive interface, even for novice users.

3. Can you manage content easily?

Contributors should be able to submit and edit content quickly, while editors and admins in charge of the knowledge base should be able to edit and publish content efficiently and conveniently. 

4. How are its access controls?

For internal knowledge bases, you’ll want software should possess adequate access and permission controls for information security. For customer service knowledge bases, the portal should be protected from unauthorized revisions by external actors.

5. What does the knowledge base integrate with?

Make sure your chosen vendor integrates with your existing productivity tools. This could be anything from your CRM software to messaging tools, like Slack, MS Teams, or Google Docs.   

What’s the difference between internal and external knowledge bases?

The creation and management of a knowledge base channel is part of the broader field of knowledge management. Knowledge management aims to collect all the valuable knowledge, best practices and routines of the company for the benefit of the entire organization.

In terms of the audience, there are two types of knowledge bases:

The internal knowledge base is designed for use within the organization. As such, it usually possesses data security features like log-on credentials, permissions and access management.

On the other hand, an external knowledge base is meant for use by customers to find answers to common problems. As an open resource, it may not require a log-in credential. External knowledge bases may also be linked to other customer support channels such as chat support or contact pages in case the information displayed is insufficient, or doesn’t solve the customer’s issue. 

Who uses knowledge base software?

The knowledge base is a very useful resource for different types of audiences. These include:

Employees– In the course of their everyday tasks, whenever they need to look up data, a procedure, or information possessed by other departments. These are mainly for internal knowledge bases.

Customers – A self-help channel can help clients solve issues on their own instead of going through a customer support agent. External knowledge bases are set up for this.

New hires – For onboarding, training, or company culture

Promotions or lateral transfers – Allows them to get up to speed quicker 

Inter-department collaborations – When different teams or departments need to work together, the knowledge base offers a reliable source of information.

External partnerships – With the appropriate clearances and restrictions in place, external users like business partners, consultants, suppliers and agencies can also find the knowledge base useful.

What are the benefits of a good knowledge base software?

A good knowledge base software can bring a ton of benefits to your business, making it worth more than the initial time and investment required. These benefits include better customer service, higher productivity, and a connected source of truth. This article about choosing knowledge base software has more info.

How do I keep my knowledge base up-to-date?

There are two ways:

  • Assign a panel of moderators to manage the content, including updating, revisions and approval of submissions.
  • Crowdsource the content creation by letting employees submit new topics, revise or update existing material, just like a wiki.

To ensure that your knowledge base stays relevant and updated, it is useful to have a knowledge management strategy.

Who is in charge of managing the knowledge base?

A knowledge manager should be appointed to oversee the implementation and maintenance of the knowledge. The knowledge manager will ideally come from a related field, such as project management, training and development, or IT.

For more information, see our article “What is a Knowledge Manager, and Why Do You Need One?

What software integrations should an internal knowledge base software have?

The internal knowledge base should integrate with your organization’s preferred messaging app like Slack or MS Teams, so that employees can quickly share and collaborate knowledge.

Likewise, it should ideally support productivity tools, so that users can look up information without leaving the tool or app they are currently using.

Tettra is able to do all of this, including linking to other tools on the menu sidebar.