Mizutech VoIP Server is described as 'SIP Softswitch for Windows with PBX, billing and business features' and is an app in the Social & Communications category. There are more than 10 alternatives to Mizutech VoIP Server for a variety of platforms, including Linux, Windows, Mac, Android and iPhone. The best alternative is Asterisk, which is both free and Open Source. Other great apps like Mizutech VoIP Server are 3CX Phone System (Freemium), Wazo (Free, Open Source), FreeSWITCH (Free, Open Source) and Kamailio (Free, Open Source).
FreeSWITCH is a scalable open source cross-platform telephony platform designed to route and interconnect popular communication protocols using audio, video, text or any other form of media. It was created in 2006 to fill the void left by proprietary commercial solutions.