1.
ACCDB - Access 2007 Database File
3.
BKS - Microsoft Works Spreadsheet Backup File
4.
CRTX - Office 2007 Chart Template File
5.
CSV - Comma Separated Values File
6.
CUB - Analysis Services Cube File
7.
CVR - Microsoft Crash Report File
8.
DATA - Analysis Studio Offline Data File
10.
DEX - Excel Spreadsheet
11.
DIF - Data Interchange Format
12.
DQY - Excel Query File
13.
EDI - Electronic Data Interchange File
14.
FFT - Find Fast Indexer file
15.
FM3 - Lotus 1-2-3 Spreadsheet Format File
16.
GAL - GenePix Array List File
17.
GLOX - Microsoft Office SmartArt Graphics Layout File
18.
GPR - GenePix Results File
19.
GRA - Microsoft Graph File
21.
IIF - Intuit Interchange Format File
23.
MDB - Microsoft Access Database
24.
MDE - Compiled Access Add-in File
25.
MTF - Mortality Table File
26.
ODC - Office Data Connection File
27.
ODS - OpenDocument Spreadsheet
28.
OLB - OLE Object Library
29.
OQY - Excel OLAP Query File
30.
PDE - ProntoDoc for Excel Document Template
31.
PDER - ProntoDoc for Excel Conventional Document
32.
PIP - Office Personalized Settings File
33.
PRN - Lotus 1-2-3 Formatted Text File
34.
PSV - Pipe Separated Values File
35.
PXL - Pocket Excel File
36.
RDF - Report Definition File
37.
RELS - Open Office XML Relationships File
38.
SHS - Microsoft Scrap File
39.
SKV - Semicolon Separated Values File
40.
SLK - Symbolic Link File
41.
SYLK - Microsoft Symbolic Link File
42.
TAB - Tab Separated Data File
43.
TDL - Tab Delineated file format
44.
TDL - Tab Delineated Format File
45.
THMX - Office 2007 Theme File
46.
TLB - OLE Type Library
47.
TSV - Tab Separated Values File
48.
UDCX - Universal Data Connection File
49.
UDF - Excel User Defined Function
50.
WB1 - Corel Quattro Pro File
51.
WB2 - Corel Quattro Pro File
52.
WB3 - Corel Quattro Pro 7 and 8 File
53.
WK1 - Lotus Worksheet
54.
WK2 - Lotus 2 Worksheet
55.
WK3 - Lotus 3 Worksheet
56.
WK4 - Lotus 4 Worksheet
57.
WK5 - Lotus 5 Worksheet
58.
WKE - Lotus 1-2-3 Educational Version Worksheet
59.
WKI - Lotus 2 Worksheet
60.
WKS - Works Spreadsheet
61.
WKS - Lotus 1-2-3 Spreadsheet
62.
WKU - Lotus 1-2-3 Spreadsheet
63.
XAR - Excel Auto-Recovery File
64.
XL - Excel Spreadsheet
65.
XLA - Excel Add-In File
66.
XLAM - Excel Open XML Macro-Enabled Add-In
67.
XLB - Excel Toolbars File
69.
XLD - Excel Database File
70.
XLK - Excel Backup File
71.
XLL - Excel Add-In File
73.
XLR - Works Spreadsheet
74.
XLS - Excel Spreadsheet
75.
XLSB - Excel Binary Spreadsheet
76.
XLSHTML - Microsoft Excel HTML Spreadsheet
77.
XLSM - Excel Open XML Macro-Enabled Spreadsheet
78.
XLSMHTML - Microsoft Excel MIME HTML Spreadsheet
79.
XLSX - Microsoft Excel Open XML Spreadsheet
81.
XLTHTML - Microsoft Excel HTML Spreadsheet Template
82.
XLTM - Excel Open XML Macro-Enabled Spreadsheet Template
83.
XLTX - Excel Open XML Spreadsheet Template
84.
XLV - Excel Visual Basic Module
85.
XLW - Excel Workspace File
87.
XPS - XML Paper Specification File