Micro lib without any dependency for getting relative time

Spaced repetition algorithm module that can be used as a mixin in Ruby apps

Replay supports event-sourced data models.

Rails gem for Replicate

A fast and functional (API and paradigm) HTTP client, using only Ruby's standard library as dependency. e.g: Net::HTTP and URI.

In Ruby 1.9.2, "." was removed from $:. This is a good idea, for security reasons. This gem backports this to Ruby 1.8.

Requisite is an elegant way of strongly defining request and response models for serialization

This gem patches the Resolv::DNS class in stdlib to include a method to resolve and iterate over SRV records according to their relative priorities and weights.

Supports Trestle, Spark, Bridge Interactive, MLS Grid

Simple response caching for Ruby applications

Allows you to specify two images in a responsive_image_tag, and includes a javascript generator which will rewrite the DOM, requesting the correct image based on the screen size of the current client device.

resque-exceptional provides a Resque failure backend that sends exceptions raised by jobs to getexceptional.com.

Rate limit how many times a job can be run from a queue

REST client to consume and interact with Hypermedia API

This gem provides two-way bindings between Salesforce records and records in an ActiveRecord-compatible database. It leans on the Restforce library for Salesforce API interactions, and provides a self-daemonizing binary which keeps records in sync by way of a tight polling loop.

RestfulQuery provides a simple interface in front of a complex parser to parse specially formatted query hashes into complex SQL queries. It includes ActiveRecord and Sequel extensions.

Tor for ruby

Easily retry code that fails intermittently. Perfect for interacting with that flakey HTTP API.

Rewritten is a lookup-based rewriting engine that rewrites requested URLs on the fly. The URL manipulations depend on translations found in a redis database. If a matching translation is found, the result of a request is either a redirection or a modification of path and requ...

Rexpl is an interactive bytecode console for Rubinius