dashbitco/nimble_csv

Series (one-dimensional) and dataframes (two-dimensional) for fast and elegant data exploration in Elixir

Fastest end-to-end CSV ingestion for Ruby (with C acceleration). SmarterCSV auto-detects formats, applies smart defaults, and returns Rails-ready hashes for seamless use with ActiveRecord, Sidekiq, parallel jobs, and S3 pipelines — even for messy user-uploaded real-world data.

A simple and fast library for text-based parser combinators

Full featured CSV parser with simple api and tested against large datasets.

A suite of utilities for converting to and working with CSV, the king of tabular file formats.

https://hellocsv.github.io/HelloCSV/

Convert JSON to CSV *or* CSV to JSON!

A faster CSV parser in 5KB (min)

Comma is a small CSV (ie. comma separated values) generation extension for Ruby objects, that lets you seamlessly define a CSV output format via a small DSL