stopwatch

active_reload

Reload Rails code in development mode only when change is deteced

rack-page_caching

Rails page caching implemented as a Rack middleware

time_bandits

Custom performance logging for Rails

profiling-masterclass

ruby-prof, stackprof, memory profiling(self-written/derailed_benchmarks/PigCI) +json import +Mini...

execution_time

How fast is your code? See it directly in Rails console.

dashboards

🍱 Ruby gem to create customizable bento-style admin dashboards in your Rails app

render-later

Render-later allows you to defer the rendering of slow parts of your views to the end of the page...

loadjs

Provides a way to load page-specific Javascript code in a Rails app.

test_benchmarker

A tool for benchmarking ruby Test::Unit tests

asset_ram

Reduce Rails allocations by 35%+ and gain a speed boost. Memoizes asset links.

kazan

Kazan creates rails project and setups predefined gems and tools. Env settings, Spec tools, Datab...

rails-app-template-sustainable

A Rails App Template that creates a new Rails app according to the sustainable rails book

panorama-static-analyzer

rails_performance

Monitor performance of you Rails applications (self-hosted and free)

rails_live_reload

Live Reload for your Rails app. The easiest way to increase your productivity.