This gems allow setting individual expiration date for each cache element

Automatically add application locale (I18n.locale) as a part of cache key in Rails views.

Don't calculate the cached value twice at the same time. Use a backup of the data if the service is down.

Write-through ActiveRecord model caching that's right on the money

An rspec custom matcher to assert Rails action and fragment caching.

Loop through dates (every day, every week, every month, etc)

A wrapper for the Globo.com's authentication/authorization API

RubyGem wrapper for ActiveResource API to http://lighthouseapp.com

Computational and Analytical Gear for Nucleic acid Utilitarian Techniques

RubyGem wrapper for ActiveResource API to http://lighthouseapp.com

makes using a simple api even more simple;

Calculated functions for metaprogramming.

China's Calendar.

Gem which allows you to select start week day and get dates ranges according to it.

Gem that adds date related scopes to ActiveRecord models

Calinda Sync Ops

CalInvite provides a simple way to generate calendar invite URLs for various providers (Google, Outlook, Yahoo) and ICS files

Caliper your rails applications

Instruments all ActiveRecord callbacks and prints their execution order, source location, and timing to the terminal during development and test.

Automatically provide dead-simple ActiveSupport callbacks to your instance methods.