- File extension "duc"
- File extension "dsq"
- File extension "dsj"
- File extension "dno"
- File extension "dn2"
- File extension "dmo"
- File extension "dlu"
- File extension "dhw"
- File extension "design"
- File extension "desc"
- File extension "dcn"
- File extension "dbp"
- File extension "daz"
- File extension "dag"
- File extension "d04"
- File extension "czd"
- File extension "cyt"
- File extension "cx"
- File extension "cv5"
- File extension "cus"
- File extension "ctv"
- File extension "ctrl"
- File extension "ctd"
- File extension "csk"
- File extension "cro"
- File extension "cpw"
- File extension "cot"
- File extension "cm5"
- File extension "clpi"
- File extension "ckf"