Name of the gem would be sinatra-sprockets. The name was token. Provides Sprockets implementation for Sinatra 1.x, 2.x(and beyond) Asset Pipeline.

export your sinatra app to a directory of static files

Sinatra extention to add +problem+ method to respond with RFC 7807 Problem Details form

WebSocket/Comet IO plugin for Sinatra

Make Sinatra routes first class objects.

This Sinatra extension enable you to add metadata to your code to expose your API as a Swagger endpoint and to validate and enrich the invocation parameters

JSONP output helper for Sinatra

A Sinatra-like DSL for Reel that supports websockets and SSE

A Sinatra extension to enable creating navigations with the simple-navigation gem. Also works for Padrino. See http://github.com/codeplant/simple-navigation for more information on simple-navigation.

Sinatra extension which handles stuff around HTML forms

This Sinatra plugin supports the full CORS spec including automatic support for CORS preflight (OPTIONS) requests. It uses CORS security best practices. The plugin logs to the default logger to guide you in setting things up properly. It will tell you why a CORS request failed and tell you how...

OpenTracing compatible auto-instrumentation for Sinatra web applications.

Use Mustache in your Sinatra app without extra view classes

A series of plugins and useful helpers for the Sinatra web framework

Add Monogid to your Sinatra app with potentially zero-configuration. Lazily creates the database connection whenever needed.

super simple auth extension for Sinatra

Sinatra REST API generator: CRUD actions, nested resources, supports ActiveRecord, Sequel and Mongoid

A Sinatra Extension that simplifies using twitter for login and authentication.

Sinatra support for server sent events

For use with Sinatra + Monk + OHM