Side by side
3CX vs Zadarma
Both stand on business phone systems. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan WebWindowsLinux+3
Visit 3CX Free plan WebWindowsMac+2
Zadarma combines business calling features with web and device apps. Compare the listed plan allowances carefully, since they differ by plan.
Visit ZadarmaThe facts
| 3CX | Zadarma | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Web, Windows, Linux, iPhone, Android, Mac | Web, Windows, Mac, iPhone, Android |
| Lowest paid plan | Basic: $300 a year | Office World: $44 a month |
| Plans published | 4 | 3 |
| Maker | 3CX | Zadarma |
| Website | 3cx.com | zadarma.com |
| On business phone systems | #1 of 167 | #5 of 167 |
3CX: what it does well
Zadarma: what it does well
- Free Standard plan includes five users.
- Custom call routing is available.
- Voicemail transcription is listed.
- Apps are available for desktop and mobile.
What to know first
- Standard is limited to five users.
- Standard includes 200 MB of storage.
- Corporation USA/Canada costs $88.00 per month.

