Nesta is a lightweight Content Management System, written in Ruby using the Sinatra web framework. Nesta has the simplicity of a static site generator, but (being a fully fledged Rack application) allows you to serve dynamic content on demand. Content is stored on disk in plain text files (there is no database). Edit your content in a text editor and keep it under version control (most people use git, but any version control system will do fine). Implementing your site's design is easy, but Nesta also has a small selection of themes to choose from.

Fast and unobtrusive Ruby code formatter

write_xlsx is a gem to create a new file in the Excel 2007+ XLSX format.

Socialization allows any model to Follow and/or Like any other model. This is accomplished through a double polymorphic relationship on the Follow and Like models. But you don't need to know that since all the complexity is hidden from you.

Plugin for the PaperTrail gem to track and reify associations

Squib is a Ruby DSL for prototyping card games

The official Facebook Business API SDK for Ruby. https://developers.facebook.com/docs/marketing-api/sdks'

Render MJML + ERb template views in Rails

DynamicForm holds a few helper methods to help you deal with your Rails3 models. It includes the stripped out methods from Rails 2; error_message_on and error_messages_for. It also brings in the functionality of the custom-err-messages plugin, which provides more flexibility over your model error messages.

A set of handy tools to upgrade your Rails application and keep it up to date

Ruby on Rails data listing gem with built-in sorting, filtering and in-place editing.

This gem allows you to easily use [Hashids](http://hashids.org/ruby/) in your Rails app. Instead of your models using sequential numbers like 1, 2, 3, they will instead have unique short hashes like "yLA6m0oM", "5bAyD0LO", and "wz3MZ49l". The database will still use integers under the hood, so this gem can be added or removed at any time.

Ruby Jard provides an unified experience debugging Ruby source code in different platforms and \ editors.

Hooks to allow people experiencing problems with Capistrano to register with a service to get help and have a smoother workflow.

A time-based background job scheduler daemon (just like Cron) for Rails

UI for viewing logs in Rack

Migrations and model helpers for creating and managing PostgreSQL 10 partitions

Terraspace: The Terraspace Framework

Chanko is a Rails extension tool

Hooks a Rails app up to the DocuSign service through the DocuSign REST API