WhatsApp, Slack, Telegram, Skype, Viber, TeamSpeak, Mumble, CSipSimple, Tox, Zulip, magicApp, MXit, mig33, glide.me, Ventrilo, Ring4, Voxer, Coco Voice, Ubigi, pttdroid, GameVox, Talk2Me, HeyTell, Mapple.me, Speak Messenger, Indoona, QuickCall.com, VoiceChatter, Chit Chat for Facebook, Tkabber, VoicePing, Vidii are some alternatives to Phoner Second Phone Number.