Puzzled by a Miniature Primate? Crack the Code Here!

Puzzled by a Miniature Primate? Crack the Code Here! - APELET
Small simian … that's one letter away from a small computer program

Small primate
Close relative of a monkey
– One letter different from a small software program
A miniature ape
A tiny simian creature
Ape with a diminutive size

APELET