Grocer interfaces with the Apple Push Notification Service to send push notifications to iOS devices and collect notification feedback via the Feedback Service. There are other gems out there to do this, but Grocer plans to be the cleanest, most extensible, and friendliest.

Guard::RuboCop automatically checks Ruby code style with RuboCop when files are modified.

Log outgoing HTTP requests made from your application. Helpful for tracking API calls of third party gems that don't provide their own log output.

RSpec matches for Mongoid models, including association and validation matchers.

Nerve is a service registration daemon. It performs health checks on your service and then publishes success or failure into one of several registries (currently, zookeeper or etcd). Nerve is half or SmartStack, and is designed to be operated along with Synapse to provide a full service discovery framework

OmniAuth strategy for salesforce.com.

Terminal painter with RGB and 256 (fallback) color and terminal effects support. No string extensions! Usage: Paint['string', :red, :bright]

Google Protocol Buffers serialization and RPC implementation for Ruby.

Gem for auto-parallelizing builds across Semaphore jobs.

An extension to the sidekiq message processing to track your jobs

makes after_commit callbacks testable in Rails 3+ with transactional_fixtures

An extension to ActiveRecord to allow the duplication method to also copy associated children, with recursive support for nested of grandchildren. The behavior is controllable with a simple DSL both on your rails models and on the fly, i.e. per instance. Numerous configuration styles and preprocessing directives are included for power and flexibility. Supports preprocessing of field values to prepend strings such as "Copy of ", to nullify or process field values with regular expressions. Supports most association types including has_one :through and has_many :through. Tags: copy child associations, copy nested children, copy associated child records, nested copy, copy associations, copy relations, copy relationships, duplicate associations, duplicate associated records, duplicate child records, duplicate children, copy all, duplicate all, clone child associations, clone nested children, clone associated child records, nested clone, clone associations, clone relations, clone relationships, cloning child associations, cloning nested children, cloning associated child records, deep_cloning, nested cloning, cloning associations, cloning relations, cloning relationships, cloning child associations, cloning nested children, cloning associated child records, nested cloning, cloning associations, cloning relations, cloning relationships, cloning child associations, cloning nested children, cloning associated child records, deep_cloning, nested cloning, cloning associations, cloning relations, cloning relationships, duplicate child associations, duplicate nested children, duplicate associated child records, nested duplicate, duplicate associations, duplicate relations, duplicate relationships, duplicate child associations, duplicate nested children, duplicate associated child records, deep_duplicate, nested duplicate, duplicate associations, duplicate relations, duplicate relationships, deep_copy, deep_clone, deep_cloning, deep clone, deep cloning, has_one, has_many, has_and_belongs_to_many

If you are tracking any kind of assets the currencies gem is for you. It contains every currency in the ISO 4217 standard and allows you to add your own as well. So if you decide to take sparkly buttons as a form of payment you can use currencies to display the shiny button unicode symbol ☼ (disclaimer: ☼ may not look like a shiny button to everyone.) when used with something like the money gem. Speaking of the money gem, currencies gives you an ExchangeBank that the money gem can use to convert from one currency to another. There are plans to have ExchangeRate provider plugin system. Right now the rates are either set manually or pulled from Yahoo Finance.

thin wrapper around rubyzip and nokogiri as a way to get started with docx files

Heavily tested yet simple filelocking solution using flock

Adapter for Gollum to use Rugged (libgit2) at the backend.

Official LaunchDarkly SDK for Ruby

Rack middleware for rate-limiting incoming HTTP requests.

Recog is a framework for identifying products, services, operating systems, and hardware by matching fingerprints against data returned from various network probes. Recog makes it simply to extract useful information from web server banners, snmp system description fields, and a whole lot more.

The scrypt key derivation function is designed to be far more secure against hardware brute-force attacks than alternative functions such as PBKDF2 or bcrypt.