FileInfo.com


.CD File Extension


File Type 1 CD-i OptImage  (Most common)
File Format File
Common? No
File Description Copy of a CD saved in the CD-i disc image format
Program(s) that open cd files Windows: Smart Projects IsoBuster

File Type 2 Visual Studio Class Diagram
File Format Proprietary File
Common? No
File Description Object class created with Visual Studio's Class Designer; stores class information, such as fields, methods, and events in a hierarchical structure; can be designed using the Class Designer visual interface, but is saved in a standard XML format.

NOTE: Class Diagrams are usually referenced by a corresponding software development project; Visual Studio may not open them directly if the associated project is not open.
Program(s) that open cd files Windows: Microsoft Visual Studio

Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/cd