- Document360 and Helpjuice are the strongest dedicated knowledge base platforms for customer-facing help centres and large internal knowledge bases.
- Guru and Tettra focus on internal knowledge, with AI answers in Slack and verification so content stays trusted.
- GitBook and Archbee suit product and developer documentation, and Help Scout combines a knowledge base with a shared support inbox.
- Published prices range from Tettra at $8 per user per month to Helpjuice from $249 a month; Document360 and Stonly are priced by quote.
A good knowledge base answers questions before they become support tickets or Slack interruptions. It gives customers a help centre they can search, gives employees a single source of truth, and shows you which questions people ask that you have not answered yet.
This guide compares the knowledge base software we would shortlist in November 2026, for customer help centres, internal wikis and product documentation. Prices and features were checked on each vendor’s website, and ratings come from G2.
The best knowledge base software at a glance
| Tool | Best for | Pricing | G2 rating |
|---|---|---|---|
| Document360 | Customer help centres and large knowledge bases | Quote via questionnaire | 4.7/5 (540+) |
| Helpjuice | Highly customisable, AI-powered knowledge bases | From $249/month (30 users) | 4.7/5 (350+) |
| Guru | Verified internal answers in Slack and the browser | See Guru’s website | 4.7/5 (2,100+) |
| Tettra | Internal wiki with AI answers in Slack | $8/user/month (10-user minimum) | 4.7/5 (161) |
| GitBook | Product and developer documentation | Free for 1 user; Essential $65/site/month | 4.7/5 (150+) |
| Archbee | Product docs and API documentation | Growing from $80/month | 4.6/5 (100+) |
| Help Scout | Small support teams wanting inbox and help docs | Free plan available | 4.4/5 (400+) |
| Stonly | Interactive, branching help guides | Quote | 4.8/5 (130+) |
| Trainual | Internal processes, policies and onboarding | Quote; $1,000 implementation fee | 4.7/5 (950+) |
Ratings from G2, checked October and November 2026. Review counts rounded down.
1. Document360: the dedicated knowledge base platform
Document360 is built for customer-facing and internal knowledge bases, with categories, versioning, analytics and AI search. It suits support and documentation teams publishing hundreds of articles.
Pricing: quote-based, via a short questionnaire on its website.
Choose Document360 if you need a structured, scalable help centre. See our Document360 alternatives and Document360 vs GitBook.
2. Helpjuice: customisable, with an AI suite
Helpjuice, in business since 2011, offers fully customisable design and a code editor, private and internal sections, search and content analytics, and an AI suite with an AI writer, search, chatbot and article translation into 40+ languages.
Pricing: Knowledge Base $249 a month for 30 users, AI-Knowledge Base $449 for 100 users, and Unlimited AI-Knowledge Base $799. There is a 14-day free trial with no credit card.
Choose Helpjuice if you want a branded knowledge base that looks exactly like your website, with AI built in.
3. Guru: verified answers where people work
Guru surfaces verified knowledge in Slack, the browser and other tools, with AI search and a verification workflow so experts confirm content is still accurate.
Choose Guru if your main goal is reducing repeated questions to experts across a large team. See Guru vs Trainual.
4. Tettra: a simple internal wiki with AI in Slack
Tettra is an internal knowledge base whose AI answers questions in Slack using your pages and Google Docs. Verification, stale-content reports and page requests keep it up to date.
Pricing: Scaling is $8 per user per month with a 10-user minimum, and there is a 30-day free trial. SSO is an add-on on Scaling.
Choose Tettra if you are a growing team that lives in Slack and wants a lightweight wiki.
5. GitBook: documentation for technical teams
GitBook publishes product and developer documentation with Git sync, AI search and a collaborative editor. It is free for one user, with Essential at $65 per site per month plus $12 per user.
Choose GitBook if your docs live alongside code. See Archbee vs GitBook.
6. Archbee: product and API docs at a predictable price
Archbee offers product and API documentation with custom blocks and a fast editor, with Growing from $80 a month and Scaling at $350 a month, and a 14-day free trial.
Choose Archbee if you want flexible product docs at a published monthly price.
7. Help Scout: inbox and knowledge base together
Help Scout combines a shared inbox, AI support tools and Help Docs, its knowledge base, with a free plan available.
Choose Help Scout if you are a small support team that wants help docs and email support in one tool.
8. Stonly: interactive help guides
Stonly builds interactive, branching guides and knowledge base articles that adapt to the answers a user gives, which suits troubleshooting.
Choose Stonly if your help content needs step-by-step logic rather than static articles.
9. Trainual: processes and policies for employees
Trainual is less a public knowledge base than an internal playbook for processes, policies and onboarding, with AI knowledge search, training paths and e-signatures.
Pricing: quote by team size, plus a one-time $1,000 implementation fee. See our Trainual pricing guide.
Choose Trainual if you want to document how your company works and train people on it.
Internal vs external knowledge bases
- External (customer-facing): prioritise branding, SEO-friendly articles, search analytics and help desk integration. Document360, Helpjuice and Help Scout fit here.
- Internal (employee): prioritise permissions, verification, Slack and browser access and AI answers. Guru, Tettra and Trainual fit here.
- Developer and product docs: prioritise Git sync, API docs and versioning. GitBook and Archbee fit here.
Must-have features
| Feature | Why it matters |
|---|---|
| Search, including AI answers | People should find answers in seconds, or they will ask a colleague |
| Easy editor | Subject-matter experts, not just writers, should be able to contribute |
| Version history | You can see what changed and roll back mistakes |
| Permissions | Keep internal notes private while publishing public articles |
| Verification or review dates | Content owners confirm articles are still accurate |
| Search analytics | Searches with no results show what to write next |
| Integrations | Help desk, Slack, SSO and the tools where questions are asked |
Knowledge base pricing models
Knowledge base tools are priced in three main ways:
- Per user, such as Tettra at $8 per user per month with a 10-user minimum. Simple for internal wikis but grows with headcount.
- Flat plans by tier, such as Helpjuice from $249 a month for 30 users or Archbee from $80 a month. Predictable for help centres.
- Per site plus per user, such as GitBook’s Essential plan at $65 per site per month plus $12 per user.
Document360 and Stonly are priced by quote. Check whether readers, guests and viewers count as paid users, since that changes the cost of an internal knowledge base a lot.
Moving to a new knowledge base
- Audit what you have and archive articles nobody has opened in a year.
- Agree a structure of categories and naming before importing.
- Import in batches and fix formatting as you go.
- Redirect old article links so customers and search engines find the new pages.
- Assign owners to each category on day one.
How to choose knowledge base software
- Decide who the audience is: customers, employees, developers or a mix.
- Check search quality with your own content during a trial, including AI answers.
- Look at analytics, especially searches that return nothing, which show what to write next.
- Confirm integrations with your help desk, Slack, SSO and content sources.
- Plan maintenance: owners, review dates and verification keep content trustworthy.
Need to create the step-by-step guides that go into your knowledge base? See our guide to the best SOP software. Browse every option in the documentation and how-to guides category.
Sources
- Helpjuice pricing page: helpjuice.com/pricing
- Tettra pricing page: tettra.com/pricing
- GitBook pricing page: gitbook.com/pricing
- G2 Knowledge Base Software category: g2.com/categories/knowledge-base-software
Frequently asked questions
What is knowledge base software?
Knowledge base software lets you write, organise and publish help articles and internal documentation, with search, permissions and analytics, so customers and employees can find answers without asking someone.
What is the best knowledge base software?
For customer help centres, Document360 and Helpjuice are strong choices. For internal knowledge in Slack, Guru and Tettra. For developer docs, GitBook and Archbee. For a small support team that wants inbox and help docs together, Help Scout.
How much does knowledge base software cost?
Tettra starts at $8 per user per month with a 10-user minimum, Archbee’s Growing plan at $80 a month, and Helpjuice at $249 a month for 30 users. GitBook is free for one user, and Document360 and Stonly are priced by quote (checked November 2026).
Is there free knowledge base software?
GitBook is free for a single user, and Help Scout offers a free plan. Most dedicated knowledge base tools offer free trials rather than free plans.
What features matter most in a knowledge base?
Fast, accurate search (increasingly AI-powered), easy editing, version history, permissions for internal and public content, analytics on searches with no results, and integrations with your help desk, Slack and other tools.
