Cheapest Knowledge Base & Docs software
9 products with sourced pricing and capability data, 4 with a free plan. Entry paid plans median $10/mo; the cheapest product covering the 4 most common capabilities here is Tettra from $8/mo. Pick the one you pay for today to find a cheaper replacement.
Read the guide: Cheapest Confluence alternatives, single-user pricing →
Same job. Way less money.
Knowledge Base & Docs price ladder
Every product's entry point, cheapest first: the free plan if there is one, otherwise the lowest paid plan as a monthly equivalent (yearly-billed plans divided by 12). Prices as observed on official pricing pages.
| Product | Free plan | Paid from | Plan | Verified |
|---|---|---|---|---|
| Nuclinoteam wiki | Free | not shown | — | 2026-10-26 |
| Confluenceteam wiki | Free | $5.78/mo | Standard | 2026-10-29 |
| Tettrateam wiki | — | $8/mo | Scaling | 2026-10-26 |
| Notionwork managementalso fits here | Free | $10/mo | Plus | 2026-10-29 |
| Outlineteam wiki | — | $10/mo | Cloud (1–10 team members) | 2026-10-26 |
| Sliteteam wiki | — | $10/mo | Basic | 2026-10-26 |
| GitBookdocumentation platform | Free | $65/mo | Premium | 2026-10-26 |
| Helpjuicedocumentation platform | — | $249/mo | Customized Knowledge Base | 2026-10-26 |
| Document360documentation platform | — | not shown | — | 2026-10-26 |
Cheapest knowledge base & docs tool for each capability
For every capability at least a third of these products support: the cheapest product that covers it, free plans counted at $0.
- Need AI assistant or SSO & SCIM provisioning?
- Tettra — from $8/mo (Scaling plan)
- Need API access?
- GitBook — free plan
- Need dashboards & reporting?
- Confluence — from $11.16/mo (Premium plan)
- Need docs & wikis or knowledge base / help center?
- Confluence — free plan
- Need guest access?
- Notion — free plan
- Need AI agents?
- GitBook — from $249/mo (Ultimate plan)
- Need AI copilot?
- GitBook — from $65/mo (Premium plan)
Frequently asked
What is the cheapest knowledge base & docs software?
Confluence has the lowest paid entry price we have sourced, from $5.78/mo (Standard plan). 4 of the 9 products also offer a free plan.
Which knowledge base & docs tools have a free plan?
4 of the 9 we track: Confluence, GitBook, Notion, Nuclino. Free plans carry limits; each product page lists them.
How much does knowledge base & docs software cost?
Paid entry plans in our data run from $5.78/mo to $249/mo, with a median of $10/mo across 7 priced products (monthly equivalents; yearly-billed plans divided by 12).
Which knowledge base & docs tool is cheapest with ai assistant or sso saml?
Tettra, from $8/mo (Scaling plan).
Which knowledge base & docs tool is cheapest with api access?
GitBook, free plan.
Is there an open-source knowledge base & docs option?
Yes: GitBook. Self-hosting removes the subscription but not the hosting and maintenance cost.
When were these prices checked?
Between 2026-10-26 and 2026-10-29, on the vendors' official pricing pages.