1. .XML – Extensible Markup Language
2. .TXT – Text File
3. .PDF – Portable Document Format
4. .DLL – Dynamic Link Library
5. .EXE – Executable File
6. .BAT – Batch File
7. .REG – Registry File
8. .INI – Initialization File
9. .CFG – Configuration File
10. .CPL – Control Panel File
11. .SYS – System File
12. .VXD – Virtual Device Driver
13. .SCR – Screen Saver File
14. .DAT – Data File
15. .HLP – Help File
16. .DRV – Device Driver
17. .CAB – Cabinet File
18. .OCX – ActiveX Control File
19. .BIN – Binary File
20. .SIT – StuffIt Archive
21. .ASP – Active Server Page
22. .MP3 – MP3 Audio File
23. .AVI – Audio Video Interleave File
24. .WAV – Waveform Audio File
25. .ZIP – Compressed ZIP File
26. .RAR – Compressed RAR File
