This gem will aggregate dearcoketalk.com posts and make them fulltext searchable because Tumblr search sucks.

Exctract an array of emails from various file formats (xls, xlsx, csv, txt)

Small wrapper and functions for persistent, immutable data structures.

Easily colorize terminal text by each column.

Rails validation gem which ensures no contact information can be passed through a field. Contact information is twitter handles, email addresses, and phone numbers.

API Wrapper para el Cuándo Llega del Ente de Transporte de Rosario

This gem makes all of your code slightly more laid back, also surprises

Generate Colissimo label for all countries with customs declaration (Colissimo webservice account required).

Collabda uses JSON or YAML files to build a collection of classes.

It provides you easy way to calculate collaborative filtering using pearson correlation coefficient.

A simple macro for injecting dependencies

Attractive tiling of images from a path name or array of filenames.

Powering MIDI through ruby

Make PORO models work with collection_check_boxes

Produce Valid Collectd configurations from ruby

Plot collectd data using gnuplot, with useful features such as host globbing.

Output each integer in the array and all the other integers in the array that are factors of the first integer.

A set of small adapaters to provide narrow subsets of Ruby collection interfaces to various data stores.

A great concern for basic Rail's collection/member style controllers.

Help create Collection+JSON hypermedia APIs