You might want to give VisiData a look: https://visidata.org https://visidata.org It's a TUI program, so if you want a full-featured GUI, it might not be up yo

You might want to give VisiData a look: https://visidata.org https://visidata.org It's a TUI program, so if you want a full-featured GUI, it might not be up your alley, but it's the best tool I've ever used for doing ad-hoc work with large CSVs.