µStreamer is a lightweight and very quick server to stream MJPG video from any V4L2 device to the net. All new browsers have native support of this video format, as well as most video players such as mplayer, VLC etc. µStreamer is a part of the Pi-KVM project designed to stream VGA and HDMI screencast hardware data with the highest resolution and FPS possible.

If you're going to live-stream from your backyard webcam and need to control it, use mjpg-streamer. If you need a high-quality image with high FPS - µStreamer for the win.

In the AUR.

An open-source utility for Linux that uses an attached webcam to seed the kernel's random number generator for cryptographic purposes.

A step-by-step process that details how to determine what programs, if any, are accessing your webcam.