Fess vs Kaldros
| Fess | Kaldros | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | api, Linux, macOS, self-hosted, Web, Windows | Web |
| Free plan | Yes | No |
| Permission sync | Yes | Yes |
| Answer citations | Yes | Yes |
| Deployment options | self-hosted | hybrid |
| Admin controls | Yes | Yes |
| Source connectors | — | 16 |
Both are listed in Best AI Enterprise Search Software. On Samsung Mobile US Press, Fess scores higher on our published basis.