Cartier is a gem to be used to simply dealing with GPS data calculations such as distance, location, and bearing.

CASino is a simple CAS (Central Authentication Service) server.

CASinoCore is a CAS server library. It can be used by other projects to build a fully functional CAS server.

Cassandra backed ORM

Chaskiq.

A simple gem to make writing groupme bots easier

This gem will help you to handle has_many :through associations when you need to add/remove these ones with checkboxes.

Manage the preview and publish tasks of templates

Tool to translate between bibliographic formats.

Citrulu exposes an api for creating, editing and compiling test files (http://www.citrulu.com/api). This gem provides a wrapper around that api which allows you to work with TestFile objects locally.

Citygate is an Engine that provides user model with sign up and log in, admin backend for managing users.

Webcms is a wrapper that automatigically will create a layer. It enables programmers to quickly build and release websites with CRUD CMS capabilities

An simple way to clear atrributes in active record

Purge data from mysql innodb tables efficiently with low overhead and impact. Based on the Percona pt-archive utility.

Intergrate with ClearSale ClearID

Closet let you bury your records instead of killing them. Data is valuable even thoes you think worthless. Closet helps you bury/hide your records in closet, and restore them whenever you want. Colest only works with ActiveRecord(Mongoid will support in near future)

Watches multiple cloud computing accounts, records expenses by resource, and exposes a REST API to query the recorded costs

Pull statistics from Amazon CloudWatch into Graphite

This gem uses Amazon SimpleDB and other adapters, to track namespaced attributes for instances that need to cluster together. It provides a simple CLI which can be used in conjunction with other shell commands. See examples/ for example Cloudformation Templates.

CNifti is a wrapper for the standard C NIfTI 1 library found at http://afni.nimh.nih.gov/pub/dist/src/nifti/