Open Source Ruby Software - Page 14

CRAFT (Configurable Runtime Analysis for Floating-point Tuning) for HPC (High-Performance Computing) uses binary instrumentation to perform runtime analysis of floating-point code, detecting cancellations and making precision level recommendations. NOTE: THIS PROJECT HAS MOVED TO GITHUB!!!! https://github.com/crafthpc/craft

This is a modified version of the CRC algorithms by Lammert Bies. It supports more algorithms and has been ported to several languages. It's also useful for learning how to do hexadecimal calculations and bitwise operations in various programming languages. Disclaimer: These test programs demonstrate the calculation of CRC. I made these translation with a basic knowledge of each language. They may or may not be appropriately formatted / secured / robustified / idiot proofed or any similar programming issues.

Template Builder, short for Template Builders United, For developers to put together great templates, graphics, etc. the group can use for projects. If you have something, throw it in the pot. Someone in the group can probably use it!

An editor for the CVS pserver password file. Supports both GUI and shell mode.

CZEBOX is a referral Open Source implementation of ISDS DataBoxes (http://datoveschranky.info/), eGovernment messaging system founded by Ministry of Interior Czech Republic and Czech Post.

Cactus Strowberry and his friends Sminkio and Bistian go to visit the Dance City museum, to see an ancient column. Bistian breaks the column and releases a demon called Pantaleon DuChaCha. The demon takes Bistian and Sminkio as his servants and begins his plan to make the entire world a disco. In order to stop Pantaleon, Cactus needs to find all the column shards. The game was developed with rpgmaker VX, and has the classic style of the tap-dance music game. Cactus is free to visit the Dance City map and choose the levels; if the player wins all the challenges he unlocks the final stage. Before the challenge, the player can choose between four different difficulties.

A robust internet café administration toolkit. A very simple GUI to manage various systems running different operating systems. The main scripting language is Ruby using GTK for its GUI.

CalvaryGDK is a framework that provides Ruby programmers with easy-to-use tools for 3D game development.

Policorp is proud to announce CampaignOS, a state-of-the-art web based CRM system for managing political campaigns' records, events, financials, gov't compliance and reporting, built with RubyOnRails and fully internationalized (i18n/l10n)

CanCan is an authorization library for Ruby on Rails that helps manage user permissions in a clean and consistent way. It centralizes all authorization logic in a single Ability class, where you define what actions each type of user can or cannot perform on different resources. Developers then use helpers like authorize! in controllers or can? in views to enforce those rules without scattering permission logic across the application. It supports defining permissions using conditions, allowing granular access based on attributes like ownership or role. Because it abstracts authorization cleanly, applications stay easier to read, test, and maintain as business rules evolve. Though no longer actively maintained in its original form, CanCan inspired forks and successors (such as CanCanCan) that continue to be widely used in Rails projects.

CanCanCan is an authorization library for Ruby and Ruby on Rails which restricts what resources a given user is allowed to access. All permissions can be defined in one or multiple ability files and not duplicated across controllers, views, and database queries, keeping your permissions logic in one place for easy maintenance and testing. Authorizations library that allows you to define the rules to access different objects, and provides helpers to check for those permissions. Rails helpers to simplify the code in Rails Controllers by performing the loading and checking of permissions of models automatically and reduce duplicated code. The current user's permissions can then be checked using the can? and cannot? methods in views and controllers. One of the key features of CanCanCan, compared to other authorization libraries, is the possibility to retrieve all the objects that the user is authorized to access.

A Smarty-like template library for Ruby.

A remote server automation and deployment tool written in Ruby. Capistrano extends the Rake DSL with methods specific to running commands on() servers. Capistrano is written in Ruby, but it can easily be used to deploy any language. If your language or framework has special deployment requirements, Capistrano can easily be extended to support them. Capistrano is bundled as a Ruby Gem. It requires Ruby 2.0 or newer. Capistrano can be installed as a standalone Gem, or bundled into your application. It is recommended to fix the version number when using Capistrano, and is therefore recommended to use an appropriate bundler. The capistrano-rails gem includes extras specifically designed for Ruby on Rails, specifically Asset Pipeline Support and Database Migration Support. Capistrano deploys using SSH. Thus, you must be able to SSH (ideally with keys and ssh-agent) from the deployment system to the destination system for Capistrano to work.

Capybara is a Ruby acceptance testing framework that simulates how a real user would interact with a web application. It allows developers to write tests that drive browsers, checking for expected content, links, buttons, and form interactions. Capybara integrates with drivers like Selenium, Rack::Test, and headless browsers such as Cuprite or WebKit, letting tests run in real browsers or lightweight simulation environments. Its DSL emphasizes natural language-like syntax, such as visit, click_button, and fill_in, which makes tests readable and expressive. Capybara also handles asynchronous JavaScript and dynamic content, waiting for elements to appear or actions to complete before assertions run. By bridging test suites with actual browser behavior, Capybara helps ensure that web apps behave correctly from a user’s perspective.

A carpool application designed for parents organizing activity carpools. This applicationn is written with ruby on rails.

This gem provides a simple and extremely flexible way to upload files from Ruby applications. It works well with Rack based web applications, such as Ruby on Rails. CarrierWave gives you a store for permanent storage, and a cache for temporary storage. You can use different stores, including filesystem and cloud storage. Most of the time you are going to want to use CarrierWave together with an ORM. It is quite simple to mount uploaders on columns in your model, so you can simply assign files and get going. Make sure you are loading CarrierWave after loading your ORM, otherwise you'll need to require the relevant extension manually. Now you can cache files by assigning them to the attribute, they will automatically be stored when the record is saved. CarrierWave also has convenient support for multiple file upload fields. Add a column which can store an array. This could be an array column or a JSON column for example. Your choice depends on what your database supports.

Cassiopeia is an open source shopping cart system written in Ruby programming language.

Cedrus is a graphical administration and monitoring tool for PostgreSQL DBMS. Inspired on Oracle's Enterprise Manager, it collects useful information over one or more PostgreSQL instances, showing it in a nice interface with useful graphs and reports.

Ceedling project hosting has moved to GitHub under the ThrowTheSwitch Organization: https://github.com/ThrowTheSwitch/Ceedling

Chartkick is a Ruby gem that makes it easy to generate beautiful charts in Rails and other Ruby applications with minimal code. It provides a high-level API where developers can use simple helpers like line_chart, pie_chart, or column_chart and pass in data arrays or ActiveRecord queries. Under the hood, it works with popular charting libraries such as Google Charts, Chart.js, and Highcharts, but hides their verbose JavaScript APIs behind a clean Ruby interface. It also handles things like automatic labels, legends, colors, and responsiveness without requiring you to manually configure chart options. Because of its integration with ActiveRecord, developers can quickly visualize trends in their application’s data with minimal transformation. Chartkick is especially valued in dashboards, reporting tools, and admin panels where quick, maintainable visualization is needed without heavy front-end development.

A simple Krovatka chatbot.

Cherubim is a tool for the online game Utopia. It has the look&feel of the windows tool Utopia Angel.

Topographical transport viewer application - eg For the london underground.

ChronoSVG generates a timing diagram, as used in electrical devices documentations, from a simple and intuitive ASCII source file. The output file is in SVG format, and makes use of CSS to defer the styling details to presentation time.