Lightbox2 for Rails asset pipeline

Change log format to json in Rails.

Better Stack Rails integration

Markdown Rails is a comprehensive stack for rendering Markdown templates and partials in Rails.

Rails gem which adds emoji parsing to markdown

MJML parser and template engine for Ruby

JS module system for Ruby on Rails 4 Assets Pipeline that solves scripts order issues

This gem provides MooTools and the MooTools-ujs driver for your Rails 3 application.

Multiselect jQuery plugin for Rails asset pipeline

A web interface for Notable

Create shipments and get rates and tracking info from various shipping carriers.

Migrations

PageDown for the Rails asset pipeline

Human Readable Change Log for Paper Trail'd data

With Params validator oyu should be able to perform controller params validation easy and with any kind of type, format, or custom validation you already know and use in oyur models.

ActiveRecord extensions for PostgreSQL. Provides useful tools for schema, foreign_key, index, function, trigger, comment and extension manipulations in migrations.

Simple activity feeds solution for Rails applications. Gives a flexible way to build activity feeds infrastructure over it.

Purecss CSS toolkit for Rails

Pure CSS framework, converted to Sass

SQL queries counter for Rails apps