Breeze integrates a content editor into the rails workflow and lets developers define the layouts they create. It renders pages, that are made up of sections, that may include cards. Breeze also manages images, even lets you edit them, and manages translations when you go international. All data is stored in yaml files, images as assets. Breeze makes commits for changes which developers upstream in a very rails sort of way.

Part of the 'buddies' gem that aims to bring some common social features to a rails site. Buddies avatar gem provides user avatar and cropping feature. Image cropping technique is credited to railscasts.com

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Gem adds yax to site

Disguise an image by applying graphical effects

Easy to use classical captcha for Rails apps

Carrierwave Uploader for CouchDB with CouchrestModel

Stores the dimensions of an image when uploading. Individual versions can be stored with different columns in the database.

A validate image ratio gem for carrierwave

Adds a 'matte' processor to Carrierwave, allowing you to specify a background colour for an image.

A simple image optimize for CarrierWave

Print images (png, jpg, gif and many others) in the command line with ease. Using rmagick and tco in the background to read the images and convert them into the extended 256 colour palette for terminals. This gem is ported from original catpix gem to be compatible with MiniMagick instead of RMagick. It will also be faster when rendering large images.

A cms bootstrap for localized client websites.

Manange your pages

Admin framework for rails + mongoid web applications.

Chaskiq.

Cheers randomly generates user avatars from a set of colors and image components.

Blog plugin for Rails

Character is a library written in CoffeeScript with a help of jQuery that allows to build data management web applications in a fast and flexible way, e.g. CMS, news reader, email client etc. It's responsive by default and designed to be data source independent.

Don't install CarrierWave in every application, keep it in one place.