@danAllen,
BeyondCompare looks interesting.
I like their Clipboard Compare module.
If I was working for a living the price would be very attractive.
//-------------------------
@BigAl,
Yes, "Everything" is excellent.
//-------------------------
@JohnK,
I don't use a differ as part pf a regular workflow.
Mainly for the WTF moments , when one is indespensable.
//-------------------------
Speaking of tools :
I use a package called 'SyncBack' from
https://www.2brightsparks.com/Used it to do scheduled backups to a spare harddrive/computer.
Fully configurable.
They have a free version.
https://www.2brightsparks.com/freeware/index.htmlReally handy for backing up changed files each period ( say hour) and then doing a full backup of selected projects at night.
Creates timestamp-named folders to store the backups according to the config file.
Used it for .dwg , code, db , emails and data files.
Haven't used it much since I 'retired', but it was an arse saver more than once.
Having a differ to compare periodic saves with current files was really handy when finding out what went wrong.