What are some alternatives?
When comparing Voxox CloudPhone and Zoiper, you can also consider the following products
Line2 - Line2 adds a second phone number or complete cloud business phone system to smartphones & computers that's robust yet affordable. Buy online or get a custom quote.
Jitsi - Open-source video calling and chat platform.
HulloMail - Read, play and manage voicemail and missed calls on your smartphone, PC, tablet & email.
Linphone - Linphone is an internet phone or Voice Over IP phone (VoIP).
YouMail - YouMail turns visual voicemail into a personal assistant for handling all your missed calls.
Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.