Independent · sourced · Updated June 2026
Best Internal Wiki (2026)
The cheapest internal wiki is Confluence at $0/mo. 4 offer a free tier (Confluence, Notion, Nuclino). This page compares 8 options on entry price, free tier, HIPAA/SOC 2 and best-for — every figure linked to its source, updated June 2026.
8 options compared on price, free tier, compliance and fit — ranked cheapest-first. Every figure links to the vendor's own page and the date we captured it; quote-only tiers show “—”, never a guess.
Key takeaways
- Cheapest: Confluence at $0/mo (Free).
- Typical paid price: from $5/mo, median $6.54/mo, up to $12/mo — across 6 with published pricing.
- Free tier: Confluence, Notion, Nuclino, Slab.
- HIPAA-ready: Confluence, Notion, Guru.
- Tracked: 8 vendors, data current through 2026-06-18.
Comparison
| # | Internal Wiki | Entry price | Free | HIPAA | SOC 2 | Best for | Source |
|---|---|---|---|---|---|---|---|
| 1 | Confluence | $0/mo Free | Yes | Yes | Yes | Software engineering teams using Jira | atlassian.com |
| 2 | Notion | $0/mo Free | Yes | Yes | Yes | All-in-one teams wanting wiki plus project management | notion.com |
| 3 | Nuclino | $0/mo Free | Yes | — | Yes | Small to mid-size teams wanting simplicity | nuclino.com |
| 4 | Slab | $0/mo Free | Yes | No | Yes | Engineering and product teams | slab.com |
| 5 | Tettra | $5/mo Basic | No | No | — | Slack-first teams | tettra.com |
| 6 | Slite | $10/mo Basic | No | — | Yes | Teams wanting AI-maintained, always-accurate docs | slite.com |
| 7 | Document360 | — | No | — | — | Technical writers and documentation teams | quote-only |
| 8 | Guru | — | No | Yes | Yes | Enterprise customer support teams | quote-only |
Prices are the lowest published self-serve monthly rate as captured on the linked source. Annual-billing and usage details are on each vendor's record in our open dataset.
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Frequently asked questions
What is the cheapest internal wiki?
Confluence has the lowest published entry price at $0/mo (Free), as of 2026-06-18.
How much does internal wiki cost per month?
Across the 6 internal wiki with published paid pricing, the median starting price is $6.54/mo, ranging from $5/mo to $12/mo, as of 2026-06-18. 4 also offer a free tier. 2 are quote-only.
Which internal wiki have a free plan?
Confluence, Notion, Nuclino, Slab offer a free tier.
Which internal wiki support HIPAA?
Confluence, Notion, Guru state HIPAA support (a BAA). Always confirm current scope with the vendor.
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How we compiled this
Official pricing pages were re-fetched via WebFetch for Guru (getguru.com/pricing, getguru.com/security), Slab (slab.com/pricing), Slite (slite.com/pricing, slite.com/security which 302-redirects to slite.slite.page), Tettra (tettra.com/pricing), Nuclino (nuclino.com/pricing), Notion (notion.com/pricing, USD via currency selector), Confluence (atlassian.com/software/confluence/pricing), and Document360 (document360.com/pricing). Where the primary page rendered only a title or geo-defaulted to EUR, two or more independent 2026 aggregators (CostBench, Automation Atlas, Featurebase, G2) were used to triangulate; a value was accepted only when consistent across the official page plus at least one corroborating source. ADVERSARIAL CORRECTIONS THIS PASS: (1) Guru is now fully quote-only on its official page, so all published per-seat figures were nulled and the model set to custom. (2) Notion Business annual is $20/seat (monthly $24), not $18/$20 as drafted. (3) Slite's HIPAA claim could not be explicitly verified on its own security page, so hipaa was set to null. No vendors were removed; all eight are real, operating products. Confluence per-user rates are the 1-50 seat band; rates decrease in higher bands. accessedAt 2026-06-18.
Last verified 2026-06-18. We re-check published prices and compliance on a recurring cadence and update this page when they change.
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