appsignal

Logs performance and exception data from your app to appsignal.com

• 5.0.7 Oct 23 2026 gem.coop system

bullet

help to kill N+1 queries and unused eager loading.

• 8.3.1 Oct 24 2026 gem.coop system

dry-monitor

Monitoring and instrumentation APIs

• 1.0.1 Nov 17 2022 gem.coop system

meta_request

Request your Rails request

• 0.8.6 May 27 2026 gem.coop system

newrelic_rpm

New Relic Ruby Agent

• 9.9.0 Apr 17 2024 gem.coop system

prosopite

N+1 auto-detection for Rails with zero false positives / false negatives

• 2.5.0 Oct 26 2026 gem.coop system

rails-footnotes

Every Rails page has footnotes that gives information about your application and links back to your editor.

• 7.1.1 May 09 2024 gem.coop system

scout_apm

Ruby application performance monitoring

• 6.3.1 Sep 28 2026 gem.coop system

appoptics_apm

AppOptics APM performance instrumentation gem for Ruby

• 4.9.0 Sep 11 2019 gem.coop system

better_errors

Better error page for Rails and other Rack apps

• 2.9.1 Nov 05 2020 gem.coop system

dashing

The exceptionally handsome dashboard framework.

• 1.3.7 Jul 11 2016 gem.coop system

dashing-rails

The exceptionally handsome dashboard framework for Rails.

• 2.6.2 Nov 29 2017 gem.coop system

fnordmetric

FnordMetric is a Ruby Event-Tracking gem on steroids

• 1.2.9 Jun 25 2013 gem.coop system

fozzie

Ruby gem from Lonely Planet Online to register statistics. Currently supports Statsd.

• 1.1.0 Oct 13 2016 gem.coop system

fozzie_rails

Ruby gem from Lonely Planet Online to register statistics in Rails

• 0.0.4 Apr 13 2016 gem.coop system

harness

• 2.0.0 Jan 12 2014 gem.coop system

metriks

An experimental metrics client

• 0.9.9.8 Apr 26 2017 gem.coop system

metriksd

Server for handling metrics from metriks

• 0.5.7 Mar 04 2015 gem.coop system

nunes

The friendly gem that instruments everything for you, like I would if I could.

• 0.5.0 Dec 08 2016 gem.coop system

peek

Take a peek into your Rails application.

• 1.1.0 Sep 27 2019 gem.coop system

rack-bug

Debugging toolbar for Rack applications implemented as middleware

• 0.3.0 May 28 2010 gem.coop system

rack-insight

Debugging toolbar for Rack applications implemented as middleware.

• 0.6.4 Nov 29 2015 gem.coop system

rackamole

Observe your web applications in the wild! == DESCRIPTION

• 0.4.1 Jul 11 2011 gem.coop system

rails_instrument

Middleware to show instrumentation information in http headers

• 0.0.4 Oct 21 2011 gem.coop system

rails_metrics

Metrics measurement for your app on top of ActiveSupport::Notifications

• 0.1 Feb 15 2010 gem.coop system

rails_view_annotator

Annotate Rails partial output with source path information

• 0.0.9 Jan 10 2014 gem.coop system

slowgrowl

Surface slow code paths in your Rails 3 app via Growl / libnotify

• 0.1.3 Oct 23 2010 gem.coop system

system-metrics

Web interface to Rails 3 performance metrics

• 0.2.5 Feb 28 2013 gem.coop system

yabeda

Extensible framework for collecting metric for your Ruby application

• 0.9.0 May 07 2021 gem.coop system