A toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Rich support for multibyte strings, internationalization, time zones, and testing.

Provides swappable XML backends utilizing LibXML, Nokogiri, Ox, or REXML.

Really simple JSON and XML parsing, ripped from Merb and Rails.

The fastest JSON parser and object serializer.

The Database Toolkit for Ruby

Type system for Ruby supporting coercions, constraints and complex types like structs, value objects, enums etc

XML to Hash translator

Font Metrics Parser for the Prawn PDF generator

A gem that provides a client interface for the Sentry error logger

All the stuff that isn't good/big enough for a real library.

As of version 0.6.0, only Microsoft Excel compatible spreadsheets are supported

JSON Schema validator. Supports drafts 4, 6, 7, 2019-09, 2020-12, OpenAPI 3.0, and OpenAPI 3.1.

Cucumber Expressions - a simpler alternative to Regular Expressions

Actionable code coverage - detects untested code blocks in recent changes

Ridgepole is a tool to manage DB schema. It defines DB schema using Rails DSL, and updates DB schema according to DSL.

Blazingly fast DataFrames for Ruby

Ruby object mapper and serializer for XML, JSON, TOML, CSV and YAML.

Thinreports is an open source report generation tool for Ruby.

Client library for Coinbase Exchange

Forme is a forms library with the following goals: 1) Have no external dependencies 2) Have a simple API 3) Support forms both with and without related objects 4) Allow compiling down to different types of output 5) Integrate easily into web frameworks