imap-filter is a Ruby implementation of an IMAP filtering application. it can handle multiple IMAP accounts, and create IMAP folders automatically where none exists. The imap-filter DSL makes it easy to filter. You can also do "dry-runs" to make sure what happens is what is expected.

Spending hours in the rails console? Spruce it up and show off those hard-working hands! jazz_hands replaces IRB with Pry, improves output through awesome_print, and has some other goodies up its sleeves. Only Ruby >= 2

TMX(Translation Memory exChange) tools for ruby

This workbench holds a collection of machine learning methods in Ruby. Rather than specializing on a single task or method, this gem aims at providing an encompassing framework for any machine learning application.

A simple and robust ActiveRecord extension for database sharding. Supports shards management with hash slots, re-sharding support, efficient KVS queries, limited RDB queries.

Mongoid::Bitfield stores boolean flags as single property in MongoDB.

Provides listing of nationality that you may need in your ruby applications.

【react&rails】notee is creating CMS(blog) gem by only one command.

Task scheduler that doesn't need to bootstrap your Rails environment every time it executes a task the way running a rake task via cron does.

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Turn the rows of your CSV into rows in your database

ryōdo【領土】 りょうど — A domain name parser gem using public suffix list (provided by publicsuffix.org / mozilla)

Stream files on S3 to stdout or from stdin

A gem to provide some checksum algorithms like Damm, ISBN-10/13, Luhn, UPC and Verhoeff.

SPID (https://www.spid.gov.it) integration for ruby

Rails engine for working with OpenAnnotations stored in Fedora4

Generate steep type definition from yard annotation.

AbstInt provide abstract integer. This can be used to test exhaustively.

A set of BPMN style operation logic

Prevents accidental email delivery in non-production (typically staging) environments by replacing email addresses using ActionMailer's Interceptor.