Embedify is a ruby gem that parses and returns an embeddable version of a page, similar to how Facebook fetches and retrieves page data when posting a link.

a ruby port of Embed.js

ember_auth_rails

Emerald is a generator for RDoc, like standard Darkfish, but looks much better (and does not have this touch of green). It is inspired by Hanna, but does not share any code with it (and does not use frames!).

EventMachine bindings for HyperDex

Official Ruby client for the Emites API. Emites is a system for creating "notas fiscais eletrônicas" (NFe / NFSe) in Brazil.

A software model in Ruby for the greenhouse gas emissions

A library to automatically handle Emoji's without crashing your MySQL database

A string validator for ActiveModel to verify it can be converted to the specified encodings.

follow REA model

bails out of the controller action on any render, head or redirect_to

https://github.com/easyPEP/enrico

Enumerated ActiveRecord fields

This gem allows to create enum records (named records) and to retrieve them easily. Supports globalize3 localization in enum fields initialization.

Provides enumeration functionality akin to that of C#'s

Demonstrates the dangers of using ENV to store credentials

The `envfile(1)` program is a program to run another program; much like `sudo(1)` or `chroot(1)`. The difference is that this program is designed to modify environment variables before that.

Envolve provides a consistent and validating way to access your application configuration that is set via environment variables. This is double beneficial if you are configuring your entire application with environment variables. See. http://12factor.net/config

Ruby client for ePay API. Supports manipulating transactions and subscriptions.

Epithet generates stable, prefixed, Base58 identifiers from 64-bit integers using AES and HMAC.