# Best Knowledge Base Software (2026) — ranked by entry price, every figure sourced and dated

8 knowledge base software on the record, median entry price $4/mo. Each price links to the vendor page it came from and the day we captured it — no guesses. 3 offer a free tier. 2 are quote-only. Current as of 2026-06-14.

Lowest entry price: Notion — $0/mo (Free).

Full comparison: https://frontdeskreview.com/best/knowledge-base-software/

| # | Vendor | Entry plan | $/mo | Source |
| --- | --- | --- | --- | --- |
| 1 | [Notion](https://frontdeskreview.com/software/knowledge-base-software/notion/) | Free | $0 (free) | notion.com |
| 2 | [Nuclino](https://frontdeskreview.com/software/knowledge-base-software/nuclino/) | Free | $0 (free) | nuclino.com |
| 3 | [Slab](https://frontdeskreview.com/software/knowledge-base-software/slab/) | Free | $0 (free) | slab.com |
| 4 | [Tettra](https://frontdeskreview.com/software/knowledge-base-software/tettra/) | Scaling | $8 | tettra.com |
| 5 | [Slite](https://frontdeskreview.com/software/knowledge-base-software/slite/) | Basic | $10 | slite.com |
| 6 | [Helpjuice](https://frontdeskreview.com/software/knowledge-base-software/helpjuice/) | Knowledge Base | $249 | helpjuice.com |
| 7 | [Document360](https://frontdeskreview.com/software/knowledge-base-software/document360/) | — | Quote-only | document360.com |
| 8 | [Guru](https://frontdeskreview.com/software/knowledge-base-software/guru/) | — | Quote-only | getguru.com |

Cite: Per The Front Desk Review, the cheapest knowledge base software ranked by sourced, dated entry price — https://frontdeskreview.com/best/knowledge-base-software/

License: CC BY 4.0. Every row is dated and links to its source.