Skype, Google Voice, Twilio, Hushed, VideoMeeting, 2ndNumber, Maytapi, MightyCall, Phone.com, Aircall, Infobip, YouMail, Ring4, Skype Lite, Telzio, Phonebooth, TinyVoicemail, Zaplee, Respond Flow, Voiswave, CallingVault, Thirdlane Connect, TENIOS Voice API, Ringio are some alternatives to Globfone.