This is simply the best CMS in town. User authentication, widgets, slideshows, easy UI with drag and drop, publishing system, versioning, etc.

This fork makes GridFS optional

This fork is made to be compatible with rails 4

The bare bones necessary for Spree.

Handles uploads for you, using your app's Active Storage configuration.

Gem which helps you to build Harmony services

The bare bones necessary for Harpiya.

Henry library to recreate testing scenarios.

Pick a 6 latest pics from flickr, instagram or twitter, make collage of its and set it as Linux's background.

Simple CMS

Hippo is a framework for writing single page web applications. It's a full stack framework that contains both server and client.

Core engine for the Publify blogging system, formerly known as Typo.

Huespace can extract a color palette from local images, url-s or images as byte-streams. Besides palettes, it can also extract the most dominant color and the most colorful color!

A Jekyll admin interface

A command-line interface for quickly creating the necessary icon sizes for iPhone and iPad apps. Full support for iOS 8.

A simple image compression gem

Generates a grid of images

uses rtesseract, mini-magick to extract text from images.

A powerful CLI tool for converting image formats using ImageMagick, with optional waifu2x upscaling when enlarging images. Supports single file conversion, bulk directory conversion, and persistent configuration settings. Convert between various formats (HEIC, JPG, PNG, WebP, etc.).

A ruby gem that gen multi sizes from one image.