Jekyll Picture Tag is a liquid tag that adds responsive images to your Jekyll static site. It follows the picture element pattern, and polyfills older browsers with Picturefill. Jekyll Picture Tag automatically creates resized source images, is fully configurable, and covers all use cases — including art direction and resolution switching — with a little YAML configuration and a simple template tag.

Pure Ruby readonly serializers for the JSON:API spec.

Deploy a middleman built site over rsync, ftp, sftp, or git (e.g. gh-pages on github).

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

NMatrix is a linear algebra library for Ruby, written mostly in C and C++.

This is an OmniAuth provider for Atlassian Crowd's REST API. It allows you to easily integrate your Rack application in with Atlassian Crowd.

MySQL Instrumentation Helpers for the OpenTelemetry framework

The ruby client for Recurly's V3 API

Sablon is a document template processor. At this time it works only with docx and MailMerge fields.

Wiselinks makes following links and submitting some forms in your web application smarter and faster

active_admin skin

Parse ignore files with Ruby

Code Obscure Tool.You can use it simplely

Gruf instrumentation for the OpenTelemetry framework

Terjira is interactive and easy to use command line interface (or Application) for Jira. You do not need to remember resource key or id. Terjira suggests with interactive prompt.

Lightweight state machine extracted from ActiveModel

JWT authentication for Warden, ORM agnostic and accepting the implementation of token revocation strategies.

Read text and metadata from files and documents (.doc, .docx, .pages, .odt, .rtf, .pdf)

ActiveRecord::JSONValidator makes it easy to validate JSON attributes with a JSON schema.

This gem configures Rails for CloudFlare so that request.ip and request.remote_ip and work correctly.