Suffix for many install files (3)

I believe the answer is:

exe

(Other definitions for exe that I've seen before include "River of southwest England" , "Banker" , "Runner" , "Tiverton's river" , "English river sounds like a letter" .)

I've seen this clue in The New York Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.