Both a trading robot and a library to build trading robots. The bitex-bot lets you buy cheap on bitex and sell on another exchange and vice versa.

Store hex strings as bit strings in PostgreSQL

A bitmask enum attribute for ActiveRecord

Simple roles for your models without external tables

BitSettings is a plugin for ActiveRecord that transform a column of your model in a set of boolean settings.

A simple implementation of a bit fields attribute for Ruby objects.

Bitwise attribute for ruby class and Rails model.

Get your bizness right and organize your business logic into operations.

A/B testing made easy

Blackbird are Migrations but then better.

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.

Blankable attribtes for ActiveRecord model'

Sets blank attributes to nil as part of validation

Blazer fork that adds support for exporting to XLSX

Blazy(be lazy) is a fluent extension to active record models to reduce number of key strokes in rails console

Allows you to utilize date calculation functionality of DBMS with a uniform API

Wrap classes in a block for easy access

包括access_token、js_api_ticket的获取，发送消息，模板消息，生成二维码，获取用户信息等。

Flexible configuration for Ruby/Rails applications with a variety of backends

An ActiveRecord plugin for self-referential and double-sided polymorphic associations.