If you're just looking for a quick way to compare two pieces of text side by side, you could also try https://comparetext.app/. I helped build it, so take that recommendation with a grain of salt, but it can be handy for quick comparisons without installing anything. Depending on your workflow though, PSPad's built-in compare features are still the better choice for editing.
-- <https://forum.pspad.com/read.php?2,74321,79773> PSPad freeware editor https://www.pspad.com
