Apps like Callback - Flextel

Here are some great alternatives to Callback - Flextel by FleXtel :
MegaVoip
MegaVoip
★3.5
LowRateVoip call abroad
LowRateVoip call abroad
★4.5
12Voip
12Voip
★4.5
ActionVoip
ActionVoip
★4.5
FreeCall
FreeCall
★3.7
Phone Id - Fake Caller Buster
Phone Id - Fake Caller Buster
★4.5
Wildix Collaboration Mobile
Wildix Collaboration Mobile
★4.3
Corporate Phone
Corporate Phone
★3.5
Call App:Unlimited Call & Text
Call App:Unlimited Call & Text
★4.3
voipoffice
voipoffice
★4.0
KeepCalling International
KeepCalling International
★4.4
ANY CALL
ANY CALL
★3.8
Vonage Home Extensions - VoIP
Vonage Home Extensions - VoIP
★3.9
VirtualPBX Softphone
VirtualPBX Softphone
★3.8
RemiPBX
RemiPBX
★4.8
WeCall - Global WiFi Calling
WeCall - Global WiFi Calling
★3.8