If you are not familiar with raspberry PI please go ahead and see this web site, I'm not going to be talking about what is and what it can do rather I want to go further and focus on just the raspberry PI + camera.
RPi-Cam-Web-Interface is a simple interface that enable the users to interact with the camera module on the raspberry PI, it has a lot of documentation and the code is really easy to understand if you're a programmer.
The interface is very easy to use and it has a lot of features such as resolution adjust, control of brightness, saturation and contrast.
I think the main feature of the the RPi-Cam-Web-Interface is be web based. Easy to use easy to share across multiple devices and easy to modify as well.
You can find the official tutorial in the raspberry website and loads more on the google