Batch file that closes all programs except certain ones-CodePudding

I'm trying to write a batch file (or powershell script) that closes all programs with active windows, except certain programs. I also don't want just any program Windows is running to be closed, just programs I've opened. I also can't program a list of what programs tokill, so I can't simply do this:

@echo off
set programs[0] = program1;
set programs[1] = program2; etc;

for %%a in (%programs%) do (
  taskkill /F /im %%a
  echo/
)

I would like something that looks like this (<...> indicating parts I don't know):

@echo off
set safeList[0] = program1;
set safeList[1] = program2; etc;

set activePrograms = <get all active programs that aren't basic windows processes, startup programs, etc.>

for %%a in (