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Dolphy is an incredibly small (~200 LOC) web framework.

Rack based domain switcher with configuration

Rack::OpenID provides a more HTTPish API around the ruby-openid library.

Main core elements

Rack middleware which requires that visitors to the site enter a 3-6 digit PIN code to gain access.

downgrade for rails in whole app、assign pathes、block level

Library for building restful APIs, with hierarchical routing, content type handling and other RESTful stuff

Drawing the Unified Modeling Language of Rack.

A druby protocol of WebSocket.

Droonga client for Ruby

Druid DSL that works with Watir

DrunkMonkey is a rack middleware providing realtime two-way http communication with API for Portal, a javascript messaging library. It provides just two protocols currently; websocket and longpoll comet. You can write code once for each protocols.

DataTable Builder provides simple building blocks to build complex filterable queries and turn them into easy to render datatables using Rails.

Dugway allows you to run your Big Cartel theme on your computer, test it in any browser, write code in your favorite editor, and use fancy new tools like CoffeeScript, Sass, and LESS. It's awesome.

The Duo Dealer API gem allows Ruby developers to programmatically access the admin section of Duo Dealer stores. The API is implemented as JSON or XML over HTTP using all four verbs (GET/POST/PUT/DELETE). Each resource, like Order, Product, or Collection, has its own URL and is manipulated in isolation.

This gem helps you integrate Microsoft Dataverse Web API to your ruby project

Let's your views define attachment styles, and delays processing all the way to the first user who requests it.

Small, fast racktivesupport web framework with handy DSL and explicit parameter validation.

An early hints Ruby / Rack middleware which just sets Link headers (i.e. for nginx http2_push_preload)