Doesn't depend on ActiveRecord and takes advantage of PORO (plain old Ruby object) like Array, Hash, and Struct internally so you can easily hack.

Provides functionality to convert between the Gregorian and Baha'i calendar, as well as significant dates and occasions in the Baha'i calendar such as the new year and holy days

Client-side tools for Concerto digital signage

Gem of asset pipeline for the Batch icon set as a webfont

BellyWash allows you to report statistics and cachethem under differentt time-ranges (day, week, ...)while storing them with different backend driver.

The easiest way to track users and send emails in your Ruby on Rails app

better-ripple is an improved version of ripple, an object-mapper library for Riak. It uses ActiveModel to provide an experience that integrates well with Rails 3 applications.

Blackbeard is a Redis backed metrics collection system with a Rack dashboard. It dreams of being a replacement for rollout and split, but is early in its development.

Like its ancestor Kaminari, BootstrapPager is a Scope & Engine based, clean, powerful, agnostic, customizable and sophisticated paginator for Rails 3+. Now with more shiny, including infinite paging, bootstrap integration, and the ability to use it within an engine.

A bopper to check if your sites are online.

An opinionated CoffeeScript framework for developing single page applications.

This gem provides a lightweight single-sign-on authentication framework to a Rails application based on Mozilla's Persona service (see: https://login.persona.org/about). Persona identifies users by email address and authenticates them using the BrowserID protocol. This lets a client prove they own an email address without exposing their browsing behaviors to the identity provider. This also frees the application from needing to securely handle and store user credentials.

Allows easily handle opening hours without take care of time zones

Defines close and open time for business which are open later then 12am

Define a window of time to have all your cache expire randomly within.

makes using a simple api even more simple;

A robust VCAL/iCalendar viewer that parses calendar invites and displays them in a readable format. Perfect for mutt email client integration and terminal viewing. Features include timezone support, recurrence parsing, multiple output formats (text, JSON, compact), and comprehensive error handling. Originally created to replace vcal2text with a leaner Ruby solution.

Provides class-building functionality and ORM-like behaviors for working with Cassandra, based on the SimpleMapper project.

Cease is a tool that detects blocks of code to be removed at a specified time.

Pure Ruby implementation of Google Common Expression Language, https://opensource.google/projects/cel.