3CX vs OnSIP
| 3CX | OnSIP | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | $25/mo | $18.95/mo |
| Open source | No | No |
| Platforms | Web, Windows, Linux, iOS, Android, macOS | Android, iOS, macOS, Web, Windows |
| Free plan | Yes | Yes |
| Included users | 40 users | 5 users |
| Auto attendant | Yes | Yes |
| Call routing | advanced | custom |
| Voicemail transcription | Yes | Yes |
| Desktop and mobile apps | Yes | Yes |
| Paid from | — | $18.95/user/mo |
| Business numbers | — | multiple |
Both are listed in Best Business Phone Systems. On Freedom251, 3CX scores higher on our published basis.