This pure Ruby library can read and write PNG images without depending on an external image library, like RMagick. It tries to be memory efficient and reasonably fast. It supports reading and writing all PNG variants that are defined in the specification, with one limitation: only 8-bit color depth is supported. It supports all transparency, interlacing and filtering options the PNG specifications allows. It can also read and write textual metadata from PNG files. Low-level read/write access to PNG chunks is also possible. This library supports simple drawing on the image canvas and simple operations like alpha composition and cropping. Finally, it can import from and export to RMagick for interoperability. Also, have a look at OilyPNG at https://github.com/wvanbergen/oily_png. OilyPNG is a drop in mixin module that implements some of the ChunkyPNG algorithms in C, which provides a massive speed boost to encoding and decoding.

A Ruby Library for dealing with money and currency conversion.

Use libsass with Ruby!

This library can be used as a module for `fog` or as standalone provider to use the Amazon Web Services in applications..

IPAddress is a Ruby library designed to make manipulation of IPv4 and IPv6 addresses both powerful and simple. It mantains a layer of compatibility with Ruby's own IPAddr, while addressing many of its issues.

Core strategies for OmniAuth.

Attributes on Steroids for Plain Old Ruby Objects

OAuth strategies for OmniAuth.

HTTP Basic strategies for OmniAuth.

Enterprise strategies for OmniAuth.

Additional strategies for OmniAuth.

OpenID strategies for OmniAuth.

Annotates Rails/ActiveRecord Models, routes, fixtures, and others based on the database schema.

Redis store for ActiveSupport

FastImage finds the size or type of an image given its uri by fetching as little as needed.

Shared classes and tests for fog providers and services.

Ruby JSON Schema Validator

WebFont Loader gives you added control when using linked fonts via `@font-face`. It provides a common interface to loading fonts regardless of the source, then adds a standard set of events you may use to control the loading experience.

Freelancer is a one page Bootstrap portfolio theme for freelancers.

A DSL for gathering options and parsing command line flags