The technologies used in the creation of OBS.Ninja are application agnostic. It doesn’t know how the output URL is being used.
To that end, any software that can use a browser-based source or has window-capture capabilities should be compatible with OBS.Ninja. This includes VMix, ManyCam, custom Electron.js-based applications, and more.
Please note though, OBS.Ninja is only officially tested using OBS (obsproject.com), and there are some OBS-specific features included with OBS.Ninja that may not work elsewhere. (tally-lights and bitrate optimizations for inactive scenes, for example)