Name:Open Broadcaster Software (Free)
URL:https://obsproject.com/
Utility:This free tool - 

• Enables real time audio/video capturing and mixing 
• Creates scenes made up of multiple sources including Window captures, images, text, browser Window, webcams, capture cards and more 
• Intuitive audio mixer with per-source filters such as noise gate, noise suppression and gain 
• Enables add new sources, duplicate existing ones and adjust their properties effortlessly 

Special Features:

• Free and open source
• Cross platform