Callision vs SIP.IO
| Callision | SIP.IO | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | Yes |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | — | api, Web |
| Free plan | Yes | Yes |
| Inbound calling | Yes | Yes |
| Outbound dialer | Yes | — |
| IVR builder | Yes | — |
| Digital channel scope | voice_plus_digital | — |
Both are listed in Best Call Center Software. On Freedom251, Callision scores higher on our published basis.