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

Daru (Data Analysis in RUby) is a library for analysis, manipulation and visualization of data. Daru works seamlessly accross interpreters and leverages interpreter-specific optimizations whenever they are available. It is the default data storage gem for all the statsample gems (glm, timeseries, etc.) and can be used with many others like mixed_models, gnuplotrb and iruby. Daru Lite is a fork of Daru that aims to focus on data manipulation and stability.

INPUT, FILTER, OUTPUT data with RULES and code

DSL for manipulating tabular data

Parse German DATANORM files like you belong to the 90s

A mountable Rails engine providing a complete data import workflow: upload/configure, preview with validation, and import. Supports CSV, JSON, XLSX, and API sources with a simple DSL for defining import targets.

将 Rails 项目的数据库 schema 导出为文档，支持 ruby, sql, csv, excel 格式

DBViewer is a mountable Rails engine that provides a simple interface to view database tables and their records.

A production-grade decision agent that provides deterministic rule evaluation, conflict resolution, and full audit replay capabilities. Framework-agnostic and AI-optional.

DSL for rendering CSVs from an array of objects

Handling of references and definitions with asciidoctor

This gem provides a suite of utilities for developers to enhance their productivity.