Clickatell SMS API vs Gammu SMSD
| Clickatell SMS API | Gammu SMSD | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | Yes | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | api, Web | Linux, self-hosted, Windows |
| Free plan | — | Yes |
| Two-way messaging | — | Yes |
| Delivery reports | — | Yes |
| Inbound SMS | — | Yes |
| API access | — | Yes |
Both are listed in Best SMS Gateway Software. On Freedom251, Clickatell SMS API scores higher on our published basis.