Best Knowledge Base Software in 2026: 13 tools compared
This page helps you find the best knowledge base software for your situation, whether you need a public help center for customers, an internal wiki for staff or both. The twelve tools range from Slack-based wikis to help desks with built-in articles and enterprise knowledge platforms, so the right choice depends on who reads your content and who writes it.
We compared the tools on authoring, search, access control, review workflows, integrations and how clearly each vendor shows its pricing. Since per author, per agent and flat pricing lead to very different bills, the page also shows what each knowledge base really costs.
Top picks at a glance
- Best for customer help centers
HelpjuiceHelpjuice offers a branded, customizable help center with AI search, version history, approval drafts and a flat monthly fee starting at $249 for up to 30 users.
$249 per month (Knowledge Base, up to 30 users) - Best for product documentation
Document360Document360 supports public, private or mixed knowledge bases with a custom workflow builder, SSO and roles, and suits SaaS documentation teams.
Contact sales - Best for teams on Jira
ConfluenceConfluence links tightly to Jira and Jira Service Management, offers page history on the free plan and is free for up to 10 users.
Free up to 10 users; Standard about $5.42 per user per month billed annually - Best for startups that want wiki and projects together
NotionNotion combines a block editor, wikis and databases in one workspace, with a free plan and Plus at $10 per member per month billed annually.
Free; Plus $10 per member per month billed annually - Best internal wiki for Slack teams
TettraTettra is built around Slack with an AI bot, usage analytics on Scaling and a published price of $8 per user per month for 10 or more users.
$8 per user/month (Scaling, 10-user minimum) - Best for verified answers at larger companies
GuruGuru delivers verified, cited answers inside Slack and the browser, with SSO, SCIM, role-based access and audit logs for mid-size and enterprise teams.
Contact sales
What is knowledge base software?
Knowledge base software stores help articles, FAQs, how-tos and procedures in a searchable library. An external knowledge base serves customers and cuts repeat support tickets, while an internal one gives employees one place to find answers. Support teams, product teams, HR and IT use it daily to write, update and find content. The core capabilities that define the category are an easy editor, strong search, access control for public and private content, review and version history, and analytics that show what people look for and fail to find.
Knowledge Base Software compared
| Tool | Best for | Starting price | Free plan or trial |
|---|---|---|---|
| Helpjuice | Best for customer help centers. | $249 per month (Knowledge Base, up to 30 users) | Free trial |
| Document360 | Best for product documentation. | Contact sales | No |
| Confluence | Best for teams on Jira. | Free up to 10 users; Standard about $5.42 per user per month billed annually | Free plan |
| Notion | Best for startups that want wiki and projects together. | Free; Plus $10 per member per month billed annually | Free plan |
| Tettra | Best internal wiki for Slack teams. | $8 per user/month (Scaling, 10-user minimum) | Free trial |
| Guru | Best for verified answers at larger companies. | Contact sales | No |
 Zendesk | Support teams that want a broad omnichannel suite with a regional data hosting option. | $19 per agent/month billed annually (Support Team) | Free trial |
 Freshdesk | SMB support teams wanting low entry price and SAML SSO on every plan. | $19 per agent/month billed annually (Growth) | Free trial |
 Bloomfire | Mid-size and enterprise teams that want a company-wide Q&A and knowledge library with search as the main feature. | Contact sales | No |
 Help Scout | Small support teams under 25 users that want a simple inbox plus Docs. | Free up to 5 users; Standard $25 per user/month | Free plan, Free trial |
 Slite | Small and mid-size teams wanting an AI search wiki at a published price. | $10 per user/month billed yearly (Basic) | Free trial |
 Nuclino | Small teams wanting a simple, fast wiki with a free plan. | Free (up to 50 items); paid prices not stated | Free plan, Free trial |
 Messagely Same team | Online businesses that want live chat, a shared inbox and a help center in one tool. | Basic $29 per month with 1 seat and 1,000 contacts | Free trial |
Prices as published by each vendor on October 24, 2026. "Contact sales" means the vendor publishes no price.
The 13 best knowledge base software in 2026
Best for customer help centers
Helpjuice
Flat-fee knowledge base with a monthly price by user cap, with AI features bundled in the two higher plans.
Helpjuice is a knowledge base with a flat monthly fee by user cap, and AI features in its two higher plans. It combines a WYSIWYG editor, version history, approval flows and more than 100 integrations.
- Best for
- Teams that want predictable flat monthly cost.
- Company size
- Small teams to large organizations (unlimited-user tier)
Key features
- Authoring and editing experience
- WYSIWYG editor with tables, custom HTML, drag-and-drop media, real-time editing and comments.
- Search and AI answers
- AI-powered search with 'Ask AI', searches PDFs and images (AI plans)
- Internal vs public access control
- Restrict by URL, IP, user or group; four user role levels; SSO via Okta, Azure AD, Auth0.
- Versioning and review workflows
- Version history with compare and restore; approval process for drafts.
Pros
- Ease of use and setup.
- Responsive support.
Cons
- Limited customization in places.
- Editing can feel clunky.
Pricing: $249 per month (Knowledge Base, up to 30 users) · Free trial
Best for product documentation
Document360
Quote-priced knowledge base platform for public or private documentation sites with workflow, analytics and an AI add-on.
Document360 is a knowledge base platform for public or private documentation sites, with workflow reviewers, analytics and an AI add-on. Pricing is by quote, and it suits SaaS and product documentation teams.
- Best for
- Product and SaaS documentation teams needing public and private KBs.
- Company size
- SMB to enterprise software documentation teams (inferred from dedicated success manager and SSO/SCIM)
Key features
- Authoring and editing experience
- Collaborative editing and Custom Workflow Builder; editor types not detailed on features page.
- Search and AI answers
- Eddy AI features included in plans; AI Chatbot sold as add-on.
- Internal vs public access control
- Public, private or mixed KB; reader accounts for private KBs; SSO, SCIM, IP restriction, roles.
- Versioning and review workflows
- Custom Workflow Builder with reviewers.
Pros
- Ease of use (G2 9.3) and support (9.5)
- Clean, user-friendly editor.
Cons
- Learning curve for editor and advanced features.
- Occasional slow loading and limited functionality.
Pricing: Contact sales
Best for teams on Jira
Confluence
Atlassian's per-user wiki and team documentation tool, tightly linked to Jira and sold in Free, Standard, Premium and Enterprise tiers.
Confluence is Atlassian's wiki and team documentation tool, tightly linked to Jira. It comes in Free, Standard, Premium and Enterprise tiers, and page insights arrive on Standard.
- Best for
- Teams already on Jira or Jira Service Management.
- Company size
- Teams of all sizes; Free to 10 users, Enterprise for large deployments (up to 150 sites)
Key features
- Authoring and editing experience
- Real-time collaborative editing with inline and page comments.
- Search and AI answers
- Advanced search, labels and hierarchy; Rovo AI summarizes and explains jargon (Standard and up per third party)
- Internal vs public access control
- Page and space permissions for users, groups and anonymous from Standard.
- Versioning and review workflows
- Page history, compare and revert on Free.
Pros
- Best-in-class integration with Jira and Atlassian tools.
- Easy to use shared knowledge base.
Cons
- Navigation and layout can be confusing.
- Search is hard to use.
Pricing: Free up to 10 users; Standard about $5.42 per user per month billed annually · Free plan
Best for startups that want wiki and projects together
Notion
All-in-one workspace for wikis, docs and lightweight project databases, priced per member with SSO starting on Business.
Notion is an all-in-one workspace for wikis, docs and lightweight databases, priced per member with SSO starting on Business. It suits startups and small teams, has a free plan, and lacks a native help desk.
- Best for
- Startups and small teams combining wiki and project tracking.
- Company size
- Two-thirds of G2 reviews from small business; Enterprise tier for large orgs.
Key features
- Authoring and editing experience
- Block editor with databases and docs.
- Search and AI answers
- Notion AI bundled in Business and Enterprise (third party); Free/Plus limited trial.
- Internal vs public access control
- Workspaces, teamspaces, guests (10 on Free); SAML SSO Business+, SCIM Enterprise.
- Versioning and review workflows
- Page history (7 days on Free)
Pros
- Flexibility to build docs, wikis and databases.
- Strong product direction (G2 sub-score 9.4)
Cons
- Learning curve (ease of use 8.3, lowest sub-score)
- Gaps for time tracking and resource planning.
Pricing: Free; Plus $10 per member per month billed annually · Free plan
Best internal wiki for Slack teams
Tettra
Internal wiki and AI Q&A tool built around Slack, with a published per-user price and SSO sold as an add-on.
Tettra is an internal wiki and AI question-and-answer tool built around Slack. It has a published per-user price with a 10-user minimum, and it is not meant for customer-facing help centers.
- Best for
- Small and mid-size teams living in Slack that want a cheap internal wiki.
- Company size
- Small to mid-size; volume discounts past 250 licenses.
Key features
- Search and AI answers
- AI answers and AI bot in Slack included on Scaling.
- Internal vs public access control
- Group permissions require the SCIM add-on.
- Analytics and content gaps
- Usage analytics on Scaling.
- Help desk and chat integrations
- Slack bot; Google Workspace integration; API access.
Pros
- Easy setup.
- Responsive support.
Cons
- SSO and SCIM cost extra on the entry plan.
Pricing: $8 per user/month (Scaling, 10-user minimum) · Free trial
Best for verified answers at larger companies
Guru
AI knowledge platform that delivers verified answers inside work tools, sold on custom quotes.
Guru is an AI knowledge platform that delivers verified, permission-aware answers inside tools like Slack and the browser. It is sold on custom quotes and aimed at sales and support teams in mid-size and enterprise companies.
- Best for
- Sales and support teams needing verified answers in Slack, browser and chat.
- Company size
- Mid-size to enterprise.
Key features
- Authoring and editing experience
- Card-based knowledge with verification; details not confirmed.
- Search and AI answers
- Knowledge Agents and AI search, cited permission-aware answers, MCP delivery.
- Internal vs public access control
- Role-based access, SSO, SCIM, audit logs (enterprise governance)
- Versioning and review workflows
- Verification workflow not confirmed.
Pros
- Intuitive onboarding and browser extension.
- Helpful support team.
Cons
- Opaque pricing.
- Price rise versus older per-seat tiers (inferred from conflicting price listings)
Pricing: Contact sales
Zendesk
Enterprise-grade help desk with per-agent plans, a bundled Guide knowledge base and per-resolution AI pricing.
Zendesk is a broad help desk suite with per-agent plans, a bundled Guide knowledge base and per-resolution AI pricing. It covers omnichannel support, with several add-ons billed separately.
- Best for
- Support teams that want a broad omnichannel suite with a regional data hosting option.
- Company size
- Tiers from Support Team to Enterprise.
Best for
- Support teams that want a broad omnichannel suite with a regional data hosting option.
- Teams comfortable paying per AI resolution.
Not ideal for
- Teams wanting flat all-in pricing: Copilot, WEM, QA and 24/7 support are paid add-ons.
- Very small teams that need a free plan (none listed)
Pricing: $19 per agent/month billed annually (Support Team) · Free trial
Freshdesk
Help desk from Freshworks with three per-agent plans, session-based AI pricing and a built-in knowledge base.
Freshdesk is a help desk from Freshworks with three per-agent plans and a built-in knowledge base. It offers SAML SSO on every plan and suits small and mid-size support teams that want a low entry price.
- Best for
- SMB support teams wanting low entry price and SAML SSO on every plan.
- Company size
- SMB to mid-market tiers.
Key features
- Help desk and chat integrations
- Connector app tasks $80 per 5,000.
Best for
- SMB support teams wanting low entry price and SAML SSO on every plan.
- Teams with moderate AI chatbot volume (500 sessions included)
Not ideal for
- Teams needing audit logs without paying for Enterprise.
- Teams wanting a free plan (none listed)
Pricing: $19 per agent/month billed annually (Growth) · Free trial
Bloomfire
Internal knowledge-sharing platform with AI search, sold on a fixed quote based on scope rather than per-user rates.
Bloomfire is an internal knowledge-sharing platform with AI search as its main feature. It is sold on a fixed quote based on scope rather than per user, and it suits mid-size and enterprise teams.
- Best for
- Mid-size and enterprise teams that want a company-wide Q&A and knowledge library with search as the main feature.
- Company size
- Sales-led; quote includes onboarding and content migration scoping.
Key features
- Search and AI answers
- G2 reviewers highlight search and discovery (AI-written G2 summary)
Pros
- Search and discovery are called out as strong.
- Little training needed for end users.
Cons
- No public pricing, quote needed for any comparison.
Pricing: Contact sales
Help Scout
Shared-inbox style help desk with a built-in Docs knowledge base and per-resolution AI pricing.
Help Scout is a shared-inbox help desk with a built-in Docs knowledge base. It fits small support teams under 25 users, is free for up to 5 users, and offers HIPAA support with a BAA on the Pro plan.
- Best for
- Small support teams under 25 users that want a simple inbox plus Docs.
- Company size
- Under 25 users on Standard; Pro for larger.
Key features
- Help desk and chat integrations
- Salesforce, Jira, HubSpot on Plus.
Best for
- Small support teams under 25 users that want a simple inbox plus Docs.
- Teams needing HIPAA support (Pro plan, BAA)
Not ideal for
- Teams needing SSO below the Pro plan (SSO is an add-on or Pro, 10 users minimum)
Pricing: Free up to 5 users; Standard $25 per user/month · Free plan, Free trial
Slite is an AI-first team wiki with per-user pricing, EU data hosting in Belgium and SOC 2 Type II. Ask AI search is on all paid plans, and it suits small and mid-size teams.
- Best for
- Small and mid-size teams wanting an AI search wiki at a published price.
- Company size
- G2: 64.4% of reviewers at companies of 50 or fewer.
Key features
- Search and AI answers
- Ask AI search on all paid plans; Agent and cross-tool search on Pro.
- Internal vs public access control
- Enforced SSO and external IdPs on higher plans; public docs on custom domain (Pro)
- Versioning and review workflows
- Doc verification workflow on Basic.
- Help desk and chat integrations
- MCP and API access on Basic; search across connected tools on Pro.
Pros
- Intuitive interface.
- Real-time collaboration.
Cons
- Limited formatting for complex documentation.
- Occasional crashes when pasting into tables (one reviewer)
Pricing: $10 per user/month billed yearly (Basic) · Free trial
Nuclino
Lightweight wiki and workspace with a free tier and SAML SSO plus audit log on the top plan.
Nuclino is a lightweight, fast wiki with a free tier for up to 50 items. It offers SAML SSO and an audit log on the top plan, and reviewers like the clean design but note poor typo tolerance in search.
- Best for
- Small teams wanting a simple, fast wiki with a free plan.
- Company size
- Small teams; custom plan above 100 users.
Key features
- Authoring and editing experience
- Markdown-friendly editor per G2 summary.
- Search and AI answers
- Sidekick AI on Business; G2 complaint: search does not tolerate typos.
- Internal vs public access control
- Publishing, custom domain, admin tools.
- Versioning and review workflows
- 30-day history on Starter, unlimited on Business.
Pros
- Easy to use, simple design.
- Clean markdown handling.
Cons
- Search handles typos poorly.
Pricing: Free (up to 50 items); paid prices not stated · Free plan, Free trial
Messagely
Messagely is a customer messaging platform that combines live chat, a shared team inbox, targeted messages, chatbots and a knowledge base.
Disclosure: Messagely is built by the team behind StackKite.
- Best for
- Online businesses that want live chat, a shared inbox and a help center in one tool.
- Company size
- Online businesses; early-stage startups can apply for a discounted Pro plan.
Key features
- Authoring and editing experience
- Rich text articles in a customizable help center, no coding required.
- Analytics and content gaps
- Article ratings.
- Help desk and chat integrations
- Zapier (750+ apps), Slack, Google Analytics, Stripe, HubSpot, Shopify, Pipedrive; Salesforce and Marketo on Pro.
Best for
- Online businesses that want live chat, a shared inbox and a help center in one tool.
- Early-stage startups, which can apply for the Pro plan at $29 per month.
Not ideal for
- Teams that need many agents on a tight budget, since every seat beyond the first costs $15 to $25 per month.
- Buyers who need chatbots or SAML single sign-on below the Pro plan.
Pricing: Basic $29 per month with 1 seat and 1,000 contacts · Free trial
How to choose the best knowledge base software
Start by deciding who the knowledge base is for. A customer help center needs polished design, public search and good SEO, while an internal wiki needs permissions, fast editing and integrations with chat tools. Then count how many people will write content, since per-author pricing can make a wiki costly. Finally, test the tool with a dozen real articles and ten real questions, and see whether the editor feels easy and the search finds the right answer.
Authoring and editing experience
The editor decides whether content stays current. Strong tools offer a clean WYSIWYG or block editor, templates, media embedding, comments and real-time collaboration. Weak ones feel clunky or limit formatting, so people stop updating articles. Ask a few real authors to write and edit an article during the trial.
- Helpjuice: WYSIWYG editor with tables, custom HTML, drag-and-drop media, real-time editing and comments.
- Document360: Collaborative editing and Custom Workflow Builder; editor types not detailed on features page.
- Confluence: Real-time collaborative editing with inline and page comments.
- Notion: Block editor with databases and docs.
- Guru: Card-based knowledge with verification; details not confirmed.
Search and AI answers
Search is how most readers find answers. Strong tools return the right article fast, tolerate typos and offer AI answers that cite their sources. Weak search forces people to browse folders or open tickets. Test with real questions and treat AI claims as unproven until your own queries confirm them.
- Helpjuice: AI-powered search with 'Ask AI', searches PDFs and images (AI plans)
- Document360: Eddy AI features included in plans; AI Chatbot sold as add-on.
- Confluence: Advanced search, labels and hierarchy; Rovo AI summarizes and explains jargon (Standard and up per third party)
- Notion: Notion AI bundled in Business and Enterprise (third party); Free/Plus limited trial.
- Tettra: AI answers and AI bot in Slack included on Scaling.
Internal vs public access control
Access control separates a private employee wiki from a public customer help center. Good tools allow public, private and mixed spaces, plus roles, groups and SSO. Weak ones offer all-or-nothing visibility. Check which controls, such as SCIM and audit logs, are limited to higher plans or sold as add-ons.
- Helpjuice: Restrict by URL, IP, user or group; four user role levels; SSO via Okta, Azure AD, Auth0.
- Document360: Public, private or mixed KB; reader accounts for private KBs; SSO, SCIM, IP restriction, roles.
- Confluence: Page and space permissions for users, groups and anonymous from Standard.
- Notion: Workspaces, teamspaces, guests (10 on Free); SAML SSO Business+, SCIM Enterprise.
- Tettra: Group permissions require the SCIM add-on.
Versioning and review workflows
Versioning and review keep content accurate. Strong tools keep page history with compare and restore, and offer approvals or verification so owners confirm articles are still correct. Weak ones let edits go live with no trail. This matters most for support, compliance and product documentation.
- Helpjuice: Version history with compare and restore; approval process for drafts.
- Document360: Custom Workflow Builder with reviewers.
- Confluence: Page history, compare and revert on Free.
- Notion: Page history (7 days on Free)
- Guru: Verification workflow not confirmed.
Analytics and content gaps
Analytics show how articles perform and what people search for without finding. Strong tools report top articles, search terms and failed searches so you can fill content gaps. Weak ones offer only page views. Check which analytics come with your plan, as many vendors reserve them for higher tiers.
- Helpjuice: Reports on article impact, search terms, top topics and user activity.
- Document360: Pro Analytics listed; failed-search reporting not confirmed.
- Confluence: Page insights on Standard; site, space and page analytics on Premium.
- Tettra: Usage analytics on Scaling.
- Nuclino: Team insights on Business.
Help desk and chat integrations
Integrations connect articles to the places people work. Strong tools link to help desks so agents can insert articles into tickets, and to Slack or Teams so staff can search from chat. Weak ones stand alone. Check for an API, Zapier and the specific tools your team uses.
- Helpjuice: 100+ integrations incl. Slack, Salesforce, Zendesk, Zapier, Teams, Freshdesk; API and Chrome extension.
- Document360: Connects to third-party help desks, chatbots and collaboration tools (specific names not listed by the vendor)
- Confluence: Jira, Jira Service Management, Trello and Marketplace apps; Slack not named on features page.
- Notion: Slack link previews, GitHub and Jira embeds noted; no native help desk.
- Tettra: Slack bot; Google Workspace integration; API access.
Pricing model
Knowledge base vendors charge per author, per agent, per user or a flat monthly fee, and many sell AI and SSO as add-ons. Count the people who will write and the people who will read, then model the price at that size rather than the starting plan.
- Helpjuice: Flat monthly fee tiered by user cap (30, 100, unlimited)
- Document360: Custom quote by team accounts, workspaces, languages, SSO and AI usage.
- Confluence: Per user per month, annual, tiered by user count.
- Notion: Per member per month; yearly saves up to 20%.
- Tettra: Per accepted user, 10-user minimum.
Target company size
Wiki tools, help desk knowledge bases and enterprise knowledge platforms serve different scales. Small teams want simple setup and clear prices, while larger ones need SSO, governance and migration help. Match the tool's typical customer to your headcount, since the wrong fit shows up in cost or missing features.
- Helpjuice: Small teams to large organizations (unlimited-user tier)
- Document360: SMB to enterprise software documentation teams (inferred from dedicated success manager and SSO/SCIM)
- Confluence: Teams of all sizes; Free to 10 users, Enterprise for large deployments (up to 150 sites)
- Notion: Two-thirds of G2 reviews from small business; Enterprise tier for large orgs.
- Tettra: Small to mid-size; volume discounts past 250 licenses.
What knowledge base software really costs
Features decide the shortlist; the bill decides whether it stays affordable as the team grows. The numbers below come from each vendor's published plans: entry prices, how far plans climb, what single sign-on costs extra and which fees sit on top.
- Median entry price
- $10
- Publish their prices
- 10 of 13
- Free plans
- 4 of 13
- Biggest price climb
- 6.1x
per user per month, cheapest paid plan of each tool
3 quote on request
plus 6 free trials
Zendesk, $19 to $115
What knowledge base software costs per year for your size
For 20 users on the cheapest plan that fits, Confluence costs $1,301 a year and Help Scout $6,000. Pick your own size: the order changes because free plans end, plans have user caps and per-user prices multiply differently.
| # | Tool | Plan and price basis | Per year |
|---|---|---|---|
| 1 | Confluence | Standard$5.42 per user per month | $1,301 |
| 2 | Tettra | Scaling$8 per user per month | $1,920 |
| 3 | Notion | Plus$10 per user per month | $2,400 |
| 4 | Slite | Basic$10 per user per month | $2,400 |
| 5 | Helpjuice | Knowledge Base$249 per month, flat | $2,988 |
| 6 | Zendesk | Support Team$19 per user per month | $4,560 |
| 7 | Freshdesk | Growth$19 per user per month | $4,560 |
| 8 | Help Scout | Standard$25 per user per month | $6,000 |
List prices per month as published on October 24, 2026, billed annually where the vendor shows both, promotions excluded. Full feature plan adds one-time onboarding fees in year one. Not in the calculation: Document360, Guru, Bloomfire, Nuclino and Messagely (quote only, another pricing unit or a plan that does not fit this size).
How far each price can climb
The entry price is rarely what you pay once the team needs more. Each line runs from a tool's cheapest paid plan to its most expensive published plan. Zendesk grows 6.1x from $19 to $115, Freshdesk 4.7x, while Tettra sells a single paid plan.
- ZendeskSupport Team $19 to Suite Professional $115 per user per month6.1x
- FreshdeskGrowth $19 to Enterprise $89 per user per month4.7x
- HelpjuiceKnowledge Base $249 to Unlimited AI-Knowledge Base $799 per month3.2x
- Help ScoutStandard $25 to Pro $75 per user per month3x
- NotionPlus $10 to Business $20 per user per month2x
- SliteBasic $10 to Pro $20 per user per month2x
- ConfluenceStandard $5.42 to Premium $10.44 per user per month1.9x
Published plan prices only; quote-only plans are not on the scale. The scale is logarithmic so cheap and expensive tools fit on one line.
The price of single sign-on
If IT requires SAML single sign-on, the plan that includes it sets your real price, not the entry plan. 4 of the 6 tools that say where SSO sits charge more for it; 1 of 13 publish nothing about SSO, so ask before you budget.
- Freshdesk+$0SAML SSO on every plan.
- Notion+$10per user per month: SAML SSO needs Business ($20) instead of Plus ($10), $2,400 a year for 20 users.
- Slite+$10per user per month: SAML SSO needs Pro ($20) instead of Basic ($10), $2,400 a year for 20 users.
- Help Scout+$50per user per month: SAML SSO needs Pro ($75) instead of Standard ($25), $12,000 a year for 20 users.
- Helpjuice+$200per unit per month: SAML SSO needs AI-Knowledge Base ($449) instead of Knowledge Base ($249).
- TettraAskSAML SSO sits on Enterprise, which is quote only.
How knowledge base pricing works
Knowledge base vendors price in ways that look similar on a pricing page but behave differently over time. Before you compare plans, decide who will write, who will read and who needs a login, then check how each vendor counts those people. The patterns below account for most of the surprises on a first-year bill, so read each one against your own team.
Per agent pricing
Help desk products bill for every support agent and include the knowledge base in the suite. Freshdesk and Zendesk are examples in this directory. Extra agents, AI copilots and bots are usually separate line items.
Per user or per member pricing
Wikis such as Notion, Slite, Tettra and Confluence charge for each person with an account. This is cheap for small groups but grows fast if the whole company needs access. Some have minimum user counts, so a tiny team can pay for seats it does not use.
Flat monthly pricing
A flat price, as Helpjuice publishes, keeps cost predictable regardless of how many people use the system. The entry price is higher, so it suits teams that have many users or want a branded help center. Compare it with per-seat pricing at your real headcount.
AI usage and add-ons
AI answers, chatbots and copilots are often billed per session, resolution or agent, and several vendors list them as separate add-ons. Extra help center sites, inboxes and SSO may also cost more. Add each add-on you need to your estimate.
Quote-only plans and renewals
Some enterprise tools, such as Document360, Bloomfire and Guru, do not publish prices. Without a number you cannot compare, and a first-year discount can fade at renewal. Request a written quote with renewal terms.
Costs that are easy to miss
Add-ons, usage fees and premium modules often decide the real bill. These are the paid extras the vendors list themselves.
- HelpjuicePro Customization Service for complex code changes (price not published)
- Document360AI Chatbot (price not published); AI Premium Suite (price not published)
- ConfluenceAtlassian Guard (SSO, SCIM; separate subscription); Marketplace apps
- NotionCustom Agents credits $10 per 1,000 monthly credits
- TettraSAML SSO (price not published); SCIM (price not published)
- ZendeskCopilot $50/agent/month; Workforce Engagement Bundle $50/agent/month; Contact Center $83/agent/month
- FreshdeskFreddy Copilot $29/agent/month; AI Agent sessions $49 per 100; Day passes $2/$7/$12
- Help ScoutAdditional Inboxes $10/month annual; Additional Docs sites $20/month annual; AI Answers $0.75 per resolution
Our recommendation
Choose the knowledge base that matches your audience first, then check that its editor, search and permissions work with your own content. Shortlist two or three tools and run the same trial articles through each. To keep costs under control, count authors and readers separately, and ask which AI and SSO features cost extra.
Knowledge Base Software: frequently asked questions
What is knowledge base software?
Knowledge base software stores help articles, FAQs and procedures in a searchable library for customers or employees. It reduces repeat support tickets and keeps teams working from one source of truth.
What is the best knowledge base software for small business?
Notion and Confluence both have free plans, and Slite and Nuclino suit small teams that want a simple wiki. Help Scout is a good fit for small support teams, since it is free for up to 5 users and includes Docs.
Internal vs external knowledge base: which do I need?
An internal knowledge base serves employees with processes and policies, while an external one serves customers with help articles. Tettra, Slite and Bloomfire are built for internal use, and Helpjuice, Document360 and help desk tools like Zendesk fit customer-facing help centers.
Is Notion a good knowledge base?
Notion works well as an internal wiki for startups and small teams that also want databases and project tracking. It has no native help desk and SCIM and audit logs need Enterprise, so it is less suited for customer-facing help centers.
How much does knowledge base software cost?
Prices vary widely. Tettra starts at $8 per user per month, Slite at $10 and Helpjuice at a flat $249 per month. Document360, Guru and Bloomfire use quotes, and Confluence and Notion have free plans.
What do knowledge base software cost for a team of 20?
Calculated from published list prices: Helpjuice: $2,988 per year on Knowledge Base ($249 x 12), no per-user charge up to 30 users; $5,388 per year on AI-Knowledge Base ($449 x 12) if SSO or AI needed; Confluence: About $1,300 per year on Standard (20 x $5.42 x 12 = $1,301; Atlassian tiers pricing, so verify); Notion: Plus: $2,400 per year (20 x $10 x 12); Business: $4,800 per year (20 x $20 x 12); Tettra: $8 x 20 x 12 = $1,920/yr at monthly rate; about $1,536/yr if the 20% annual discount applies (derived); Zendesk: Support Team: 20 x $19 x 12 = $4,560 per year; Suite Team: 20 x $55 x 12 = $13,200 per year; Freshdesk: Growth: 20 x $19 x 12 = $4,560 per year; Pro: 20 x $55 x 12 = $13,200. Tools that quote on request are not included.
Which knowledge base software have a free plan or free trial?
Helpjuice (free trial), Confluence (free plan), Notion (free plan), Tettra (free trial), Zendesk (free trial), Freshdesk (free trial), Help Scout (free plan, free trial), Slite (free trial), Nuclino (free plan, free trial) and Messagely (free trial), according to the vendors' sites on October 24, 2026.