Digital Photo Professional
DPP is the Canon software for transfering the images from the card / camera to the computer. You can make adjustments in the RAW files just the way you would have done in your camera and convert these files into TIFF or JPEG file formats.
This software is included with all the Canon cameras. Most of the beginners shoot on jpegs file format as they are not aware of the capabilities of the camera RAW format. In fact if you have shot in raw, you have a much wider scope of making corrections of whatever mistake you made while shooting. Also you can very well control limited situations which you could not have overcome while shooting.