When an ActiveRecord/ActiveModel model won't save because it's invalid, this gem writes the validation error messages to the log.

HTTP topping for Raspberry Pi

Wikidata API client

Capture Screenshots on Windows with Ruby to bmp, gif, jpg or png formats.

Manage your daily working list in Ruby

WPScan is a black box WordPress vulnerability scanner.

Scenario-based WebSocket black-box testing

XapianDb is a ruby gem that combines features of nosql databases and fulltext indexing. It is based on Xapian, an efficient and powerful indexing library

Provides rake tasks for Xcode build

Zero configuration file watcher for Objective-C that runs tests, installs Pods each time you save a file

Fast XML to Ruby Hash converter

Provides a wrapper to generate XML sitemaps and sitemap indexes.

Extensible Metadata Platform (XMP) parser extracts metadata from JPEG and TIFF image files. It also supports parsing raw XML files containing XMP.

Blazing-fast-cross-platform-monkey-patch-free string XOR. Yes, that means JRuby too.

A Ruby wrapper for accessing Yammer's REST API

Checks YAML files for correct syntax

YardJunk is structured logger/error validator plugin for YARD documentation gem.

Ruby bindings for yrs. Yrs "wires" is a Rust port of the Yjs framework.

Ruby bindings for Z3 Constraint Solver

Zabel, is a build cacher for Xcode, using Xcodeproj and MD5, to detect and cache products for targets.