A Rails engine gem for exporting ActiveRecord collections to CSV via a helper and controller endpoint

Command Line Boss is a convenience layer over OptionsParser. It provides a simple way to define command line options and arguments, and then parse them into an options object.

CompletionKit is a prompt testing platform that runs as a Rails engine or a standalone app. Run prompts against real datasets, score every output with an LLM judge against criteria you define, track prompt versions, and get AI-generated improvement suggestions grounded in your actual results. Includes a web UI, REST API, and a built-in MCP server with 34 tools.

COSING database

see http://cpee.org

Help handle CSVs in a more efficient way

Help handle CSVs in a more efficient way

Help handle CSVs in a more efficient way

Help handle CSVs in a more efficient way

Help handle CSVs in a more efficient way

csv linter and autofixer like rubocop

CSV Indexer makes it simple the indexation and searching in lasge CSV files. It is not as robust as Lucence, but it is simple and cost-effective. May index files with millions of rows and find specific rows in matter of seconds. Find documentation here: https://github.com/leandrosardi/csv-indexer.

A Ruby CLI for guided CSV workflows and direct commands including extraction, randomization, splitting, parity checks, deduplication, and stats.

Because I hate excel, I'd rather query my csv files like I would query a db

This gem provides a simple framework for CSV::Table/CSV::Row lintingusing custom rules for columns and rows

csv_rb provides an csv renderer so you can move all your spreadsheet code from your controller into view files. Now you can keep your controllers thin!

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.

CsvWizard provides a simple framework to import CSV files into Rails models. It supports required fields, default values, row-level validation, and hooks for pre- and post-processing.

A small gem to track custom events and export saved data

Report compose compiler metrics