Microsoft Silverlight is much like Adobe, in the sense that it is used as an application framework for writing and also running rich Internet application, such as multimedia, animations and graphics. Silverlight is available as a plug-in for most web browsers but because of its compatibility so it therefore cannot run all browsers. Although this freeware is a good tool to use for the likes of web design it has raised some suspicions that it has caused some problems for many people?s computers. I say this because many people have reported that it has an effect on their computer, by a means of making it really slow and sluggish. One of the reasons for this is that it installs a lot of files and settings that are not necessarily needed, and therefore it results in a slow computer, because every time we use a computer it is continuously searching through the registry, which is where a lot of these unnecessary files and settings are dumped.