PortSIP PBX vs Zadarma
| PortSIP PBX | Zadarma | |
|---|---|---|
| Free plan | Yes | Yes |
| Paid from | Free | $44/mo |
| Platforms | Web, Windows, macOS, iOS, Android | |
| Free plan | Yes | Yes |
| Included users | 3 users | 10 users |
| Business numbers | multiple | multiple |
| Auto attendant | Yes | Yes |
| Call routing | custom | custom |
| Voicemail transcription | Yes | Yes |
| Desktop and mobile apps | Yes | Yes |
Listed together in Best Business Phone Systems