Asterisk vs SIP.IO
| Asterisk | SIP.IO | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | Yes |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | api, Linux, self-hosted | api, Web |
| Free plan | Yes | Yes |
Both are listed in Best Interactive Voice Response Software. On Samsung Mobile US Press, Asterisk scores higher on our published basis.