Sonar vs VISP
| Sonar | VISP | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | $500/mo | $0.80/mo |
| Open source | No | No |
| Platforms | api, Web | Web |
| Free plan | No | No |
| Paid from | 500 /mo | — |
| Usage rating | Yes | Yes |
| Plan management | Yes | Yes |
| Invoice generation | Yes | Yes |
| Payment collection | Yes | Yes |
| Customer accounts | Yes | Yes |
| Prepaid billing | — | Yes |
| Postpaid billing | — | Yes |
Both are listed in Best Telecom Billing Software. On Inferse, Sonar scores higher on our published basis.