PSD.rb is an open source Ruby library for reading and writing PSDs. You’ll find a robust, modern, and fast way to programmatically access Photoshop documents. It’s a real pleasure to work with. This represents the most mature and up-to-date way to access Photoshop documents, outside of using Photoshop itself.

For more difficult bugs, Squash has a suite of collaboration tools, like commenting, assigning, and resolving bugs. There are lots of other features: Squash can symbolicate iOS stack traces, de-obfuscate Java traces, and source-map JavaScript call stacks.

Dashing uses gridster.js to create a layout for your widgets. A widget is combination of an HTML file used for layout and bindings, a SCSS file for styles and a coffeescript file which allows you to handle incoming data & functionality

• Use premade widgets, or fully create your own with scss, html, and coffeescript.
• Widgets harness the power of data bindings to keep things DRY and simple. Powered by batman.js.
• Use the API to push data to your dashboards, or make use of a simple ruby DSL for fetching data.
• Drag & Drop interface for re-arranging your widgets.

Fluentd is an open source log collector daemon written in Ruby. Fluentd receives logs as JSON streams, buffers them, and sends them to other systems like MySQL, MongoDB, or even other instances of Fluentd.

The target user of Fluentd is, people who want to aggregate logs from multiple servers, and write into somewhere. For them, Fluentd provides:

• Distributed, Realtime, and Machine-Readable Log Aggregation
• Reliable Log Forwarding
• Flexibility by Plugin Mechanism
• Multi Language Logger Library

The Ruby Toolbox gives an overview of useful tools, sorted in categories and rated by the amount of watchers and forks in the corresponding source code repository on GitHub so you can find out easily what options you have and which are the most common ones in the Ruby community.

Localtunnel gives you a smart URL that is accessible over the Internet. Thus, you can see how your web application would actually behave when hosted publicly. With this smart feat, you can test and debug various scenarios that you have not encountered in your local environment. Making your local web server public also allows you to use your personal computer for conducting demos of your web application running in the real-world environment.

Implementing local tunnel is as quick and easy as pie

Concatenating your site’s JavaScript means:

• All your source code is cached in the browser on the first hit
• It reduces the number of HTTP requests necessary to load a single page

Users can organize their separate JavaScript source files into directories during development and can add as many comments as they want—they’ll be stripped from the resulting concatenated output automatically.

Every search engine likes a fast loading website and this open source ruby library helps users to achieve desired search engine rankings.

Sprockets is written in Ruby and has no run time dependencies apart from the Ruby standard library.

Website: http://www.getsprockets.org/

This graph library can be used alone or with Ruby on Rails.

Few graph types that can be created using Gruff graphing library:

• Line Graph
• Wide Graph
• Pie Graph
• Spider Graph
• Side Stacked Graph
• Bar Graph with Image

Website: http://nubyonrails.com/pages/gruff

Mongrel was originally written by Zed A. Shaw. It is licensed under the Ruby License. Mongrel and related files can be downloaded manually from RubyForge.

Website: http://mongrel.rubyforge.org

The TorqueBox project develops the open-source, ninja-grade Ruby application platform built upon the research, code and success of the JBoss Rails project.

TorqueBox Server provides compatibility with Ruby frameworks such as Ruby-on-Rails, while also providing additional functionality.

Website: http://torquebox.org/