OBS or Open Broadcaster Studio is a free and open source tool that offers wide range of features with easy streaming facility same as wirecast. It offers wide variety of templates for customized needs of every user. Users can take audio input from different sources like DeckLink, audio mixers and soundtracks etc. When we talk about features then most of the details are same as that of Wirecast easier to access and simple to execute.
Most of the things on this tool can be managed with inn built system controls so for beginners, it appears quite easier to work with vMix.
VMIx is a popular live streaming software tool with lots of cool features and interactive user interface.