This gem enables your model to query the database using the earthdistance extension. This should be much faster than using trigonometry functions over standart indexs.

Aquarium is a full-featured Aspect-Oriented Programming (AOP) framework for Ruby that is designed to provide an intuitive syntax and support for large-scale, dynamic aspects.

Allows caching of pages with flash messages by rendering flash messages from a cookie using JavaScript, instead of statically in your Rails view template. Flash contents are converted to JSON and placed in a cookie by an after_filter (default) or a Rack Middleware (option).

Engine to synchronise provisioning templates from GitHub

gcm_on_rails is a Ruby on Rails gem that allows you to easily incorporate Google's 'Google Cloud Messaging for Android' into your Rails application. This gem was derived from c2dm_on_rails (https://github.com/pimeys/c2dm_on_rails) after Google deprecated C2...

Ruby bindings for LZ4. LZ4 is a very fast lossless compression algorithm.

A set of patches for mikel's mail gem. With this, you can easily send and receive mails with ISO-2022-JP enconding (so-called 'JIS-CODE').

Ruby implementation of Naive Bayes that generates true probabilities per class, works with many token types, and provides lots of bells and whistles while being optimized for performance.

Use this gem to access New Relic application information via a REST api

Redis instrumentation for Newrelic.

Ruby Gem for RFC 3610 - Counter with CBC-MAC (CCM)

Better support for legacy database schemas for ActiveRecord, such as columns named class, or any other name that conflicts with an instance method of ActiveRecord.

Slide Show (S9) - Write Your Slides in Plain Text w/ Formatting Conventions - A Free Web Alternative to PowerPoint and Keynote

slideshow-models - slide show (S9) models 'n' machinery for easy (re)use

A suite for basic and advanced statistics on Ruby. Tested on CRuby 1.9.3, 2.0.0 and 2.1.1. See `.travis.yml` for more information. Include: - Descriptive statistics: frequencies, median, mean, standard error, skew, kurtosis (and many others). - Correlations: Pearson's r, Spearman's rank correla...

Test your XML with Test::Unit, MiniTest, RSpec, or Cucumber using handy assertions like #assert_xml_equal or #assert_xml_structure_contain.

Using Vim's client/server functionality, this library exposes a way to spawn a Vim instance and control it programatically. Apart from being a fun party trick, this can be used to integration test Vim script.

Rails way to harness the power of SQL "EXISTS" statement

A library to verify, decode, decrypt and parse Yubikey one-time passwords.

ZFS admin scripts, such as automatic snapshots, mysql snapshotting, scrubbing, etc.