I'm pretty sure Excel can do all of this. I think if all of the data has already been ported to Excel, it would be much easier to figure out how to make Excel do what you want than to port the data to something else and learning something else.
In this example, you could filter the data by name, sort the results by the date, and highlight all duplicate addresses using conditional formatting.
If you really don't want to use Excel, you could load the csv in almost any programming language; read in the records, find the duplicates and spit the resulting records back out into whatever format you want.
In this example, you could filter the data by name, sort the results by the date, and highlight all duplicate addresses using conditional formatting.
If you really don't want to use Excel, you could load the csv in almost any programming language; read in the records, find the duplicates and spit the resulting records back out into whatever format you want.