A mature CSV toolset with simple api, full of options and tested against large datasets.
CSV parser and writer
fast-csv parsing package
fast-csv formatting module
CSV parsing implementing the Node.js `stream.Transform` API
CSV stringifier implementing the Node.js `stream.Transform` API
Streaming CSV parser that aims for maximum speed as well as compatibility with the csv-spectrum test suite
Convert objects/arrays into a CSV string or write them into a CSV file
A JSON to CSV and CSV to JSON converter that natively supports sub-documents and auto-generates the CSV heading.
CSV and object generation implementing the Node.js `stream.Readable` API
Fast CSV parser
TypeScript definitions for react-csv
Allure CSV report
Easily create CSV data from json collection
Fast and powerful CSV parser for the browser that supports web workers and streaming large files. Converts CSV to JSON and JSON to CSV.
Build CSV files on the fly basing on Array/literal object of data
csv test data for writing robust csv parsers
React csv downloader
ES7 async-await wrapper for the csv package.
Converts an array of objects into a CSV file. Saves CSV to disk or returns as string.
Convert CSV to JSON
Convert JSON to CSV
A webpack module to intelligently load csv files.
CSV parsing implementing the Node.js `stream.Transform` API
Fast CSV parsing with support for serde.
CLI tool for CSV Adapter — cross-chain Rights, proofs, wallets, and end-to-end testing
HEDL to/from CSV conversion
A Blazing-Fast Data-wrangling toolkit.
datu - a data file utility
The CSV magician
Elusion is a modern DataFrame / Data Engineering / Data Analysis library that combines the familiarity of DataFrame operations (like those in PySpark, Pandas, and Polars) with the power of SQL query building. It provides flexible query construction without enforcing strict operation ordering, enabling developers to write intuitive and maintainable data transformations.
CSV dialect sniffer using Garcia's Table Uniformity Method
Specialized Rust CSV readers/writers leveraging SIMD instructions.
This crate provides a complete implementation of the SQL-on-FHIR specification for Rust, enabling the transformation of FHIR resources into tabular data using declarative ViewDefinitions. It supports all major FHIR versions (R4, R4B, R5, R6) through a version-agnostic abstraction layer.
CSV processing built on comp-cat-rs: streaming, resource-safe, composable effects
Parsley CSV is a command-line tool that converts SQL database dumps to CSV files.
The CSV library provides a complete interface to CSV files and data. It offers tools to enable you to read and write to and from Strings or IO objects, as needed.
Decorate ruby CSV library to sanitize output CSV against CSV injection attacks.
This library performs diffs of CSV data, or any table-like source. Unlike a standard diff that compares line by line, and is sensitive to the ordering of records, CSV-Diff identifies common lines by key field(s), and then compares the contents of the fields in each line. Data may be supplied in the form of CSV files, or as an array of arrays. The diff process provides a fine level of control over what to diff, and can optionally ignore certain types of changes (e.g. changes in position). CSV-Diff is particularly well suited to data in parent-child format. Parent- child data does not lend itself well to standard text diffs, as small changes in the organisation of the tree at an upper level can lead to big movements in the position of descendant records. By instead matching records by key, CSV-Diff avoids this issue, while still being able to detect changes in sibling order. This gem implements the core diff algorithm, and handles the loading and diffing of CSV files (or Arrays of Arrays). It also supports converting data in XML format into tabular form, so that it can then be processed like any other CSV or table-like source. It returns a CSVDiff object containing the details of differences in object form. This is useful for projects that need diff capability, but want to handle the reporting or actioning of differences themselves. For a pre-built diff reporting capability, see the csv-diff-report gem, which provides a command-line tool for generating diff reports in HTML, Excel, or text formats.
CSV template handler for Rails. Enables :format => 'csv' in controllers, with templates of the form report.csv.csvbuilder.
SmarterCSV is a high-performance CSV reader and writer for Ruby focused on fastest end-to-end ingestion — not just parsing. It returns ready-to-use hashes with configurable header and value transformations, intelligent defaults, and automatic delimiter discovery. Built for real-world data pipelines, SmarterCSV supports chunked processing for large files, streaming via Enumerable APIs, and C acceleration to optimize the full ingestion path (parsing + hash construction + conversions). Designed to handle messy user-uploaded CSV while remaining easy to integrate with Rails, ActiveRecord imports, Sidekiq jobs, parallel processing, and S3-based workflows.
Creating CSV files in Ruby is painful! CSV Shaper makes life easier! It's ideal for converting database backed models with attributes into CSV output. It can be used without Rails, but works great with ActiveRecord models and even comes with support for it's own template handling.
CSV Import for humans
CSV Mapper makes it easy to import data from CSV files directly to a collection of any type of Ruby object. The simplest way to create mappings is declare the names of the attributes in the order corresponding to the CSV file column order.
CsvPirate is the easy way to create a CSV of essentially anything in Ruby, in full pirate regalia. It works better if you are wearing a tricorne!
CSV formatter for SimpleCov
Tolerant, liberal CSV parsing
A Ruby library for CSV file processing featuring comparison, transformation, sorting, and validation. Includes CLI tools for debugging malformed CSVs, auto-detection of encodings and separators, and efficient handling of large files.
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