Hacker-gems installs most needed gems for hackers.

Adds cross-browser ISO 8601 support to the JavaScript Date object based on EC5.1. This is a Sprockets gem to simplify inclusion of the client-side library.

A bloomfilter implementation in both Ruby and Javascript that can be serialised to and loaded from JSON. Very useful when needing to train a bloom filter in one language and using it in the other.

it said optional

Rails Mountable Engine that sets up your Product Blog, share your posts on facebook, twitter and E-mail your users with your latest product news

A tool for AWS CloudFormation. It can define a template in Ruby DSL.

Mango is a dynamic, database-free, and open source website framework that is designed to make life easier for small teams of designers, developers, and content writers.

Use the medivo platform to find lab locations, make labcorp appointments, place lab orders

Simple but powerful tool for managing mongodb databases

Async web framework

Provides help with developing and testing Netzke components

The embodied design system for Network for Good.

loaded dynamically over any web page, this will help you to overlay designer's work on your DOM rendering

Out-of-the-box sinatra server for web site sketching using haml + sass + coffee-script

Pig Media Server

Rails 3.1 drop-in blog engine for existing Rails applications

Inspired by backbone-rails with testing & updated Backbone

A rake task to minify javascripts and coffeescripts

A static file server for rich web apps that automatically compiles SASS, HAML, CoffeeScript and more

Liqpay.com payment gateway integration for Spree E-Commerce.