A free Groundwire alternative for Mac, Windows and Android
YunZheng Voice is a free SIP softphone for your computer and your phone. Add an account from your office phone system or your provider, or sign in with YunZheng and your extensions and YunZheng Voice numbers are added for you. Incoming calls open a call window on the desktop and ring like a phone call on your mobile. Built on Orbit.
At a glance
| Item | YunZheng Voice | Groundwire |
|---|---|---|
| What it is | A SIP softphone that works with any SIP phone system, built on Orbit | A SIP client for business users with heavy daily call needs |
| Platforms | macOS, Windows and Android; iPhone through TestFlight, coming | iOS and Android |
| Free option | Free, with any SIP account | A one-time purchase with lifetime updates |
Groundwire details are from Groundwire's own page as of 2026-09; terms change, so check there for the current ones.
Where Groundwire is strong
Groundwire works with any standard SIP service, keeps accounts registered in the cloud so calls arrive while the app stays light on battery, and offers per-account controls and encryption.
YunZheng Voice suits people who want one free softphone on the phone and on the computer, with an incoming-call window on the desktop.
What YunZheng Voice includes
Works with any SIP phone system
Add SIP accounts from your office phone system or your internet phone provider: a name, the SIP address and the password, with advanced settings when your provider needs them.
YunZheng Voice numbers
Sign in with YunZheng and your personal phone, your extensions and your YunZheng Voice numbers are added automatically.
Several accounts at once
Every account stays connected on its own. Choose on the keypad which one a call goes out from, and see which one a call is coming in on.
A call window on the desktop
Incoming calls open a small window in the corner of the screen with Answer and Decline, while you work in another app.
Calls on your phone
On Android, incoming calls ring full screen, like any phone call. On iPhone, calls use the phone's own call screen, including on the lock screen.
Everything a call needs
Mute, hold, keypad tones and transfer. Put a call on hold to answer a second one.
Call history
Every call placed, received and missed, with a Missed filter and one click to call back.
Voicemail
Listen to your YunZheng voicemail in the app; for any other SIP account, one click calls its voicemail number.
Contacts
Names and numbers or SIP addresses, kept on the device.
Your audio devices
Choose the microphone, the speaker and the device that rings.
Keyboard first
Type a number from anywhere in the app to dial it; one key answers, or calls the number typed.
Always ready
Keeps running when the window is closed so calls still ring, opens at login, and follows light or dark mode.
Start in a minute
- Download YunZheng Voice for your computer or Android phone.
- Add an account: sign in with YunZheng for your personal phone and YunZheng Voice numbers, or choose Add SIP account and enter the details from your phone system.
- When the account shows Ready, dial a number, an extension or a SIP address.
Download YunZheng Voice About YunZheng Voice
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