Viber

Make free calls and take advantage of video chat

Download Viber varies-with-device free

Skype

Make and receive video calls from friends, families, and business contacts from all over the world 

Download Skype 8.51.0.80 free

textPlus Free Text + Calls

Place phone calls and send text messages to anyone in the world in seconds

Download textPlus Free Text + Calls free

Google Duo

Make free video calls using mobile phones or tablets

Download Google Duo 49.0.236391473.DR49_RC05 free

Hello - Caller ID & Blocking

Free app for Android that uses Wi-Fi or your data connection to call facebook friends

Download Hello - Caller ID & Blocking 3.0.0.1.0 free

WhatsCall

Phone folks internationally for free with this stellar app

Download WhatsCall 1.3.5.027 free

Optima Free SIP Dialer

Optima Free Mobile SIP Dialer

Download Optima Free SIP Dialer 1.1.0.1 free

CallMe

This app will call your phone instantly or at a time you schedule

Download CallMe 1.2 free

MobiSIP Dialer

Easy to use SoftPhone for VoIP Service users

Download MobiSIP Dialer 4.1.5 free

Burner - Disposable Numbers

Create temporary numbers with your phone

Download Burner - Disposable Numbers 1.1.1 free