Or, try the demo version of a different compare tool; see
https://www.prestosoft.com/edp_features.asp
There's a 30-day evaluation period, according to:
https://www.prestosoft.com/edp_eval.asp - which I found with Google, not being able to find any obvious info about demo/evaluation copies etc on the usual pages of the website. Searching the FAQ page did find "evaluation" a few times though.
There's also an online tool at:
https://www.prestosoft.com/edp_diffnow.asp -- but it is limited in the size of files you can compare, and also in which clever features are present.
Disclosure: I use EDP (though not in fact a terribly recent version).