CSVFileView is another option, https://www.nirsoft.net/utils/csv_file_view.html , but it says it has problems with very large files.

I've been using ModernCSV for a while to handle readonly CSVs (mainly for sanity checking) and it's been fantastic.

Version 2 looks great, it's a hard balance to add features and not become bloated so will be interesting to see what it's like going forward.

(I love the product, not affiliated, just been using it every day since November 2020 as a happily paid user and recommend it to anyone who has the "pleasure" of working with CSVs)