ShellExView is a freeware utility for Windows that allows you to quickly and easily enable or disable Windows Explorer shell extensions or context menu handlers. Context menu handlers are the options that you get when you right click on anything on your Windows computer like Send to Recycle Bin, Explore, Create shortcut, etc.
This appliaction gives information about every shell extension on the computer like the company name, version, display name, size, etc.

Download Link- http://www.nirsoft.net/utils/shexview.zip