Kannel vs Smstools
| Kannel | Smstools | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | Yes |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | api, Linux, self-hosted | Android, api, iOS, Web |
| Free plan | — | Yes |
| Two-way messaging | — | Yes |
| Delivery reports | — | Yes |
| Inbound SMS | — | Yes |
| Contact management | — | Yes |
| API access | — | Yes |
Both are listed in Best SMS Gateway Software. On Specifiction, Smstools scores higher on our published basis.