This Python script lists the processes created in a 5 s time interval.

gistfile1.py

import os
import re
import time

# Return a set of running processes.
def process_set():
  # Assume Windows.
  return set(re.findall('Image Name:   (.*)',
    os.popen('tasklist /fo list').read()))

# Return the processes created in the time interval t.
def processes_created(t):
  t1 = process_set()
  time.sleep(t)
  t2 = process_set()
  return t2 - t1

# Return the processes created on a 5 s interval.
if __name__ == "__main__":
  print(processes_created(5))