Does anyone know of any free (free of cost or open source) webcam software that will act as a video server so I can host my webcam via the web?

Or is there any other way I can do that?

www.yawcam.com

You just set it up in your pc, you can view it remotely from any pc, you can set password for users, too!!

it is way too cool!! and it is FREE!!! you don't need to depend on someone's server.