Apps like Callback Duocom

Here are some great alternatives to Callback Duocom by Duocom Europe, S.L. :
Blablablapp cheap calls
Blablablapp cheap calls
★4.0
007VoIP Cheap VoIP calls
007VoIP Cheap VoIP calls
★3.9
Total International
Total International
★3.6
Flextel - myNumber
Flextel - myNumber
★5.0
magicJack for BUSINESS
magicJack for BUSINESS
★4.0
True Talk - Global Wifi Calls
True Talk - Global Wifi Calls
★4.2
Telzio
Telzio
★3.8
OnPhone - Second Phone Number
OnPhone - Second Phone Number
★3.4
Call Recorder - callX
Call Recorder - callX
★4.1
Call Recorder
Call Recorder
★4.0
Hangout Voice - Global Calls
Hangout Voice - Global Calls
★4.4
Tele Now - Private Number
Tele Now - Private Number
★4.1
Automatic Call Recorder
Automatic Call Recorder
★3.6
WeCall - Global WiFi Calling
WeCall - Global WiFi Calling
★3.8
Ring4: Phone + Text + Video
Ring4: Phone + Text + Video
★3.5
Call App: We Talk to Global
Call App: We Talk to Global
★4.5