All Services Programming & Development VoIP softphone developer $25/hr · Starting at $500 4+ years experience of development of client voip softphones for Windows, Android, and iOS, Flash/HTML5 webphones, and custom sip solutions. About $25/hr · Ongoing Download Resume 4+ years experience of development of client voip softphones for Windows, Android, and iOS, Flash/HTML5 webphones, and custom sip solutions. Skills & Expertise AndroidDeveloperiOSVoIPWindows 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts VoIP Services