Linked List : Three FOSS Tools to work with CSVs

If you work with Data, you can't escape working with CSVs. It's a universally accepted data format for sharing the data. I use the following tools to wrangle with it.


csvkit is a suite of command-line tools for converting to and working with CSV, the king of tabular file formats.


Written in Python, csvkit is a FOSS set of command-line tools. The toolkit includes CLIs for cutting, joining, importing (from excel, JSON), exporting(convert into other formats), inquiring, searching, sorting. They are all pipe-able.

They also include power tools where you can query CSV like SQL by importing into SQLite. You can also perform joins and unions on CSVs without importing them into SQLite.


A simple JSON to CSV converter that handles objects and nested documents. Conversion happens inside the browser, in straight JavaScript. It may choke on large files.

JSON to CSV Converter

These days more and more datasets are published as JSON. It's a handy format online. Offline when someone is trying to explore the data, it's not that useful. Mainly because there are not many easy JSON exploring tools, and it's meant for developers. A table format like CSV is more intuitive. So often, many convert JSON they obtained into CSV to play with data. JSON to CSV Converter is a simple FOSS online tool that for moderately sized JSON file. It's effortless to use.

If you are using a large JSON file, you can use our favorite tool-set csvkit. It can convert from JSON o CSV, for example, to convert icmr_testing_status.json from datameet/covid19 dataset; you can run

in2csv icmr_testing_status.json -f json -k rows


Simple command-line utility to convert CSV files to searchable and sortable HTML table. Supports large datasets and horizontal scrolling for large number of columns.


This is a simple tool for converting CSV into an HTML table that can be embedded online. It uses Datatables library, which I love. Of course, you could do it manually if you know simple HTML and JavaScript. But this is easy.

So what are your favorite CSV tools?

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