WhatsApp, Skype, Google Voice, FreePBX, Viber, Grasshopper, Tox, CallJoy, Telegram X, Talk360, 8x8 Virtual Office, KrispCall, TeleCMI, Zadarma, Nectar Desk, JustCall, MightyCall, RingRoost, Dialpad, Aircall, KeepCalling, LinkedPhone, CrazyCall, FooCall, EasyCall Phone Call Center, UppTalk, VoiceChat, Spaxtel, CallHippo, Amazon Connect, LimeCall, Voiptime Cloud Call Center, Mitel, CallKite, mene talk, RingOver, Uno.im, FriendCaller, uContact, Talkdesk, Amivox, Anello Voice, VCC Live, Echoplexus, Freshcaller, Slingshot VoIP, Ringio are some alternatives to CloudTalk.io.