Use this gem to simply turn on your ec2 instance when it's off and off when it's on

Ec2Templater provides a means of EC2 service discovery by templating your server config. It works by periodically querying AWS for the list of running EC2 instances, rendering a template, then running a notify command if it has changed. Using this setup you can provide, for example, a haproxy config that updates based on instances that are available filtered by tag

ec2 manage commands

Update your UltraDNS configured CNAMEs to point to EC2 instance public hostnames

ECal client gem to communicate with the ECal API.

Setup a fully functional e-commerce cart

Currency Conversion using the European Central Bank's Euro foreign exchange reference rates.

This is an unofficial wrapper for the awesome, free ExchangeRatesAPI, which provides exchange rate lookups courtesy of the Central European Bank."

ECB rates for UOL.

Elliptic Curve Cryptography for CTFer

MySQL replication binlog parser using mysql-binlog-connector-java.

Distributed Concurrent Objects, Evolved

Ecertic provides digital signature and KYC services.

Gem for installing and running the ECF classify tool

Ruby client for APIs provided by eCFR.gov

Provides Ruby-based access to the FCC's Electronic Comment Filing System

Echo is a test double for API interactions that learns from the real API. In its simplest use case, it extends Net::HTTP and tracks every HTTP call to a registered domain. If it hasn't seen that call, it stores both the request and the response. On subsequent calls it returns the stored response. Explicit scenario start/end markers are also supported for more complex multiple-step interactions.

Generates everything you need to get moving fas

Allows application to configure which ActiveSupport notifications they wish to report metrics for and also define how these metrics are collected and reported

ECHONET Lite Libraly for Ruby