BookStack vs Fern
| BookStack | Fern | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | £37.50/mo | Free |
| Open source | No | No |
| Platforms | api, Linux, self-hosted, Web | Web |
| Free plan | Yes | Yes |
| Publishing audience | both | both |
| Custom domain | Yes | Yes |
| SSO support | Yes | Yes |
| Version history | Yes | Yes |
| Content analytics | — | Yes |
Both are listed in Best Knowledge Base Software. On Freedom251, BookStack scores higher on our published basis.