OTP - OpenDocument Presentation Template

PPT - PowerPoint File Format

PPTX - PowerPoint Presentation File Format

ODP - OpenOffice Presentation File Format

POT - Microsoft PowerPOint Template File Format

POTM - Microsoft PowerPoint Template File with Macros

POTX - Microsoft PowerPoint Presentation Template

PPS - PowerPoint Slide Show File

PPSM - Macro-Enabled PowerPoint Presentation File

PPSX - PowerPoint Slide Show File

PPTM - Macro-Enabled PowerPoint Presentation File Format