CleverCSV is a Python package for handling messy CSV files. It provides a drop-in replacement for the builtin CSV module with improved dialect detection, and comes with a handy command line application for working with CSV files.
Pandas-friendly time tracking from the command line, repo by repo
Converter CSV by LimberDuck is a GUI tool to convert multiple large csv files to xlsx files.
csv file reader
Analyze delimiter-separated values files