Best Onebox Alternatives in 2026
Updated
20 apps from business phone systems ranked against Onebox on the same published basis.
- 1Onebox vs Microsoft Teams
- 2Onebox vs 3CX
- 3Onebox vs PortSIP PBX
- 4Onebox vs VitalPBX
- 5Onebox vs Freshcaller
- 6Onebox vs Zadarma
- 7Onebox vs OnSIP
- 8Onebox vs CallHippo
- 9Onebox vs Talkroute
- 10Onebox vs Zoho Voice
- 11Onebox vs Voxbi
- 12Onebox vs Vodia PBX
- 13Onebox vs PBXware
- 14Onebox vs Voxcloud
- 15Onebox vs Sonetel
- 16Onebox vs Xorcom CompletePBX
- 17Onebox vs sipXcom
- 18Onebox vs Nextiva
- 19Onebox vs Zultys Cloud Services
- 20Onebox vs Brekeke PBX
Onebox alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Microsoft Teams | 8.3 | Free plan | $0.33/mo | Android, iOS, Linux, Mac, Web, Windows |
| 2 | 3CX | 8.2 | Free plan | $25/mo | Web, Windows, Linux, iOS, Android, Mac |
| 3 | PortSIP PBX | 8.0 | Free plan | Free | Android, API, iOS, Linux, self-hosted, Web, Windows |
| 4 | VitalPBX | 7.7 | Free plan | $100/mo | Android, API, Browser, iOS, Linux, Mac, self-hosted, Web, Windows |
| 5 | Freshcaller | 7.6 | Free plan | $15/mo | Android, iOS, Web |
| 6 | Zadarma | 7.6 | Free plan | $44/mo | Web, Windows, Mac, iOS, Android |
| 7 | OnSIP | 7.5 | Free plan | $18.95/mo | Android, iOS, Mac, Web, Windows |
| 8 | CallHippo | 7.5 | Free plan | $18/mo | Android, Browser, iOS, Mac, Web, Windows |
| 9 | Talkroute | 7.5 | Android, iOS, Linux, Mac, Web, Windows | ||
| 10 | Zoho Voice | 7.4 | Free plan | Android, API, Browser, iOS, Linux, Mac, Web, Windows | |
| 11 | Voxbi | 7.3 | Free plan | €1.20/mo | Android, API, iOS, Mac, Web, Windows |
| 12 | Vodia PBX | 7.2 | Android, API, iOS, Linux, Mac, self-hosted, Web, Windows | ||
| 13 | PBXware | 7.2 | Android, API, Browser, iOS, Linux, Mac, self-hosted, Web, Windows | ||
| 14 | Voxcloud | 7.2 | Free plan | $2/mo | Android, iOS, Windows |
| 15 | Sonetel | 7.2 | Free plan | $9.95/mo | Android, API, iOS, Linux, Mac, Web, Windows |
| 16 | Xorcom CompletePBX | 7.1 | Free plan | Free | Android, iOS, Linux, self-hosted, Web |
| 17 | sipXcom | 7.0 | Free plan | Free | API, Linux, self-hosted |
| 18 | Nextiva | 6.9 | No | $15/mo | Android, Browser, iOS, Linux, Mac, Web, Windows |
| 19 | Zultys Cloud Services | 6.9 | Android, iOS, Mac, Web, Windows | ||
| 20 | Brekeke PBX | 6.9 | API, Linux, self-hosted, Web, Windows |
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Questions about Onebox alternatives
What is the best alternative to Onebox?
Microsoft Teams, number 1 in business phone systems with a score of 8.3 out of 10. The others here: 3CX, PortSIP PBX, VitalPBX and 16 more.
What is the best free alternative to Onebox?
Microsoft Teams is the best-ranked alternative with a free plan. 14 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.