live stream on PC

How to live stream on pc?
do you know any app which allows me to live stream on PC?
I am thinking about libe stream for my teaching at home. I know some apps like Facebook, Twitter, Snapchat, Skype.
However, i think it is a social channel and I want to find some things more formal and professional. Can you give me some suggestion?
I find this app is quite popular in Southest Asia and wonder whether I should apply it in my teaching: BIGO LIVE for pc.

I hope somebody has a good answer for this.. I so want to stream my media to my FIOS DVR box, funny Verizion calls it a media server. Windows 10 can see the box but can't do anything with it.

skype. google hangout?

So you want like a conference call type live streaming platform, like Skype but more professional? Join.me does a great job, have a look into it, I haven't used it too much myself.