If you need to map JSON to other JSON via some kind of mapping then this gem helps you to do that easily

Cache store that does nothing

Similar to ActiveRecord::Timestamp, this gem provides a blame datetime and user for create/update modifications to records. Configured models will be blamed when creating or updating, and the blame can cascade to associated models on create, update or delete. Currently, this gem is intended for use with Devise.

manage blank elements of Array objects.(Rails is not required, but ActiveSupport is required.

Sets blank attributes to nil as part of validation

Blastramp Shipping Services Client Library for polling inventory and submitting shipping orders.

Blaze CSS is the best CSS framework I have ever used. It is simple, small, and elegant. This gem combines the elegance of Blaze CSS with the power of the Rails asset pipeline.

blazing recipes for deploying processes with foreman

blazing recipe for rolling restarts with unicorn

blazing recipe for restarting/reloading app with upstart

Search and manage slashtags for blekko.com

Generate spreadsheets amortization schedules from the command line

Blerg is designed to take the headache out of boilerplate code. Just write up an eRB template for the boilerplate and pass variables into it on the command line.

A Ruby library for working with the Blesta Resellers API

This is an implementation of Bottom-Left method to 2-Dimensional Strip Packing Problem.

blingee is a Ruby interface to the Blingee.com API.

Simple helper for messaging around blinkbox Books

A Ruby API client for Workshop.

This gem is usable for making blockchains from database through models.

A powerful and flexible DSL-based library for Slack's Block Kit framework, built on ActiveModel.