This gem add the "deep merge" feature to class Hash. It means that if you want to merge hashes that contains other hashes (and so on...), those sub-hashes will be merged as well. This is very handy, for example for merging data taken from YAML files.

Calculates the haversine distance between two locations using longitude and latitude. This is done using Math formulas without resorting to Active Record or SQL DB functionality

Provides recurrence to icalendar gem.

Efficient, immutable, thread-safe collection classes for Ruby

Easily create value objects without the pain of Ruby's Struct (or its setters)

managing jar dependencies with or without bundler. adding bundler like handling of version ranges for jar dependencies.

Open Source version of the GitHub Pages theme, now for Jekyll

A Liquid tag plugin for Jekyll blogging engine that embeds Tweets, Timelines and more from Twitter API.

Use jemalloc as default allocator, everywhere!

Ruby Kernel for IPython

JPush's officially supported Ruby client library for accessing JPush APIs. 极光推送官方支持的 Ruby 版本服务器端 SDK. 相应的 API 文档：http://docs.jpush.io/server/server_overview/

Translations for the kaminari gem

Validations mixin for Ruby objects and support for Lotus

Mail safe provides a safety net while you're developing an application that uses ActionMailer. It keeps emails from escaping into the wild. Once you've installed and configured this gem, you can rest assure that your app won't send emails to external email addresses. Instead, emails that would normally be delivered to external addresses will be sent to an address of your choosing, and the body of the email will be appended with a note stating where the email was originally intended to go.

Masonry will rock your world!

Create Metro 2 format files for credit reporting

A phishing kit collector for scavengers

This provides interfaces to various passive DNS databases to do the query and to normalize the responses. The query tool also allows for recursive queries, using an SQLite3 database to keep state.

Percy visual testing for Capybara

This module provides two methods: PHP.serialize() and PHP.unserialize(), both of which should be compatible with the similarly named functions in PHP. It can also serialize and unserialize PHP sessions.