IconBanner adds custom nice-looking banners over your mobile app icons

Ruby library to convert images to usable & printable ZPL code

Knowledge Base is a bunch of models for Ruby on Rails that you probably need to build your own

Middleman extension that allows you to create image thumbnails by providing resize_to option to image_tag helper

Optical mark recognition of multiple-choice tests and surveys. Low-level ruby library to generate response sheets in PDF form and to automatically score manually filled-out forms.

The peoplefinder provides searchable staff profiles for your organisation. Since it's a rails engine, you can re-skin it for your organisation.

pixelart - yes, you can! generate your own pixel art images (off-blockchain) using any design (in ascii text) in any colors; incl. 2x/4x/8x zoom for bigger sizes

Best rails admin panel. Great mechanism for customization and rapid development

Image processing via MiniMagick for Refile

Open source Ruby on Rails photo gallery engine designed for integration with Refinery CMS.

Extends Watir to take stitched-together screenshots of full web pages.

Simple and real-life tested Rails::Engine admin interface

Lolcommits refactored for use at the UIUC branch of ACM.

Converts ActiveAdmin into a simple CMS

A Railtie that provides an asset management system for css, javascript, and sprites in your Rails applications and engines. ActiveAssets includes two libraries, ActiveExpansions and ActiveSprites. ActiveSprites generates sprites defined by a dsl similar to a route definition. Similarly, ActiveExpansions' dsl creates ActionView::Helpers::AssetTagHelper javascript and stylesheet expansions, and adds additional features

Gem that focus on making a public site's resources very quickly while being very configurable!, supports facebook sharing, instagram and google analytics integration

This plugin implements attachment storage and processing, integrated with ActiveRecord models and Ruby CGI/Rails-style uploads. Image processing operations including a number of different resizing & thumbnailing modes are provided, and the architecture simplifies clean implementation of other types of processing. Errors are carefully handled to minimize the possibility of broken uploads leaving incomplete or corrupt data. RMagick, MiniMagick, and ImageScience image processors are supported.

Blobsterix is a transcoding, caching, storage server that can transform your blobs (images, pdf, ...) at request time.

An engine for search-engine-optimized blog management.

A Rails captcha gem that attempts to determine whether or not a user is human.