Mizu Softphone (MizuPhone) is a professional VoIP softphone based on the open standard SIP protocol with an easy to use interface for the Microsoft Windows operating system. With MizuPhone you can connect to any SIP (proxy and/or registrar) server on the public internet or on your local area network. The Mizu VoIP Softphone offers the best possibly call quality in all circumstances be it low quality internet or broadband access with HD audio and will integrate seamlessly with your desktop without disturbing you in your everyday work. While you are not in call or chat, it is listening in the background for incoming calls without any impact for your system performance, providing professional features such as unified communication and voice recording. MizuPhone is a free softphone for nonprofessional usage. The pro version cost is $49: buy now
What is a softphone? A softphone is a software program for making telephone calls over the Internet (VoIP) using a PC, rather than dedicated hardware phone. Using a softphone you can usually make free IP to IP calls and calls to PSTN (landline, mobile) with the usual low VoIP rates. More...
Classic Edition MizuPhone Classic is a full featured native softphone for Windows with a small footprint and efficient hardware resource utilization. Free and Pro versions are available.
Modern Edition MizuPhone Modern is a customizable softphone for Windows with flexible user interface and business integration capabilities. Customized Softphone We provide fully customized and branded softphone for companies. The customization options can be found here or you might check our All-In-One Softphone offer.
Now it is possible to customize and build the windows softphone yourself from here.