This is a very simple framework to create small frontends in a webserver

Qor Cache

Easily to make your own layout

This is a gem to helper you quick add qqface function to your application. This is a wrapper for the jquery.qqFace.js plugin, and add two action view helper method for use easy.

https://github.com/austinthecoder/qry

A Rails add-on for handling query filters

Quadro Content Management System

Quadro Content Management System Internationalization

QuantumFields is a gem to extend your Rails model's making them able to use virtual fields from a JSON column or a Text column serialized as a Hash. This means that you can use fields that were not explicitly declared in your schema as if they were.

Class Quarter for handling with the division of a calendar year into an arbitrary grouping of quarters, by default, the US fiscal calendar.

Parallel query for ActiveRecord

A Rails engine providing a web-based SQL query console with security-first design: read-only by default, optional DML (INSERT/UPDATE/DELETE) with confirmation dialogs, flexible authorization, comprehensive audit logging, and query execution plans.

Detecting query result changes

This gem provides DSL to write custom complex filters for ActiveRecord models

Query activerecord models based on sql-like syntax with arbitratily deeply nested conditions

This gem provides additional functionality on your query objects. It will filter and paginate your query by supplying an option

Query methods extend in rails 4: Asscociation has_many, union, or, like, operators...

This is a gem to help you to structure common reports of you application just by writing in the controller

(DEPRECATED use active-record-query-count instead) Display an overview of quantity of queries and their origin in Rails applications.

QueryWise is a lightweight, developer-friendly tool that helps Ruby on Rails teams detect, analyze, and fix inefficient database queries. Automatically detect N+1 queries, slow queries, and missing indexes without needing heavy, expensive Application Performance Monitoring (APM) software.