ruby-prof is a fast code profiler for Ruby. It is a C extension and therefore is many times faster than the standard Ruby profiler. It supports both flat and graph profiles. For each method, graph profiles show how long the method ran, which methods called it and which methods it called. RubyProf generate both text and html and can output it to standard out or to a file.

stackprof is a fast sampling profiler for ruby code, with cpu, wallclock and object allocation samplers.

Color is a Ruby library to provide basic RGB, CMYK, HSL, and other colourspace manipulation support to applications that require it. It also provides 152 named RGB colours (184 with spelling variations) that are commonly supported in HTML, SVG, and X11 applications. A technique for generating monochromatic contrasting palettes is also included. The Color library performs purely mathematical manipulation of the colours based on colour theory without reference to colour profiles (such as sRGB or Adobe RGB). For most purposes, when working with RGB and HSL colour spaces, this won't matter. Absolute colour spaces (like CIE L*a*b* and XYZ) and cannot be reliably converted to relative colour spaces (like RGB) without colour profiles. Color 1.8 adds an alpha parameter to all <tt>#css_rgba</tt> calls, fixes a bug exposed by new constant lookup semantics in Ruby 2, and ensures that <tt>Color.equivalent?</tt> can only be called on Color instances. Barring bugs introduced in this release, this (really) is the last version of color that supports Ruby 1.8, so make sure that your gem specification is set properly (to <tt>~> 1.8</tt>) if that matters for your application. This version will no longer be supported one year after the release of color 2.0.

Memory profiling routines for Ruby 2.5+

Ohai profiles your system and emits JSON

InSpec provides a framework for creating end-to-end infrastructure tests. You can use it for integration or even compliance testing. Create fully portable test profiles and use them in your workflow to ensure stability and security. Integrate InSpec in your change lifecycle for local testing, CI/CD, and deployment verification. Packaged distributions of Progress® Chef® products obtained from RubyGems are made available pursuant to the Progress Chef EULA at https://www.chef.io/end-user-license-agreement, unless there is an executed agreement in effect between you and Progress that covers the Progress Chef products ("Master Agreement"), in which case the Master Agreement shall govern. Source code obtained from the Chef GitHub repository is made available under Apache-2.0, a copy of which is included.

For some reason, there's no profile for a gem in SimpleCov, an excellent, simple Ruby 1.9 coverage tool. So this one defines one in about 8 lines of code.

Outputter to display the slowest tests in a minitest suite

A sampling profiler for ruby code based on patches to gperftools

Profiling toolkit for Rack applications with Rails integration. Client Side profiling, DB profiling and Server profiling.

Integrates ruby-prof with RSpec, allowing you to easily profile your RSpec examples.

Ruby applications tests profiling tools. Contains tools to analyze factories usage, integrate with Ruby profilers, profile your examples using ActiveSupport notifications (if any) and statically analyze your code with custom RuboCop cops.

InSpec provides a framework for creating end-to-end infrastructure tests. You can use it for integration or even compliance testing. Create fully portable test profiles and use them in your workflow to ensure stability and security. Integrate InSpec in your change lifecycle for local testing, CI/CD, and deployment verification. This has local support only. See the `inspec` gem for full support. Packaged distributions of Progress® Chef® products obtained from RubyGems are made available pursuant to the Progress Chef EULA at https://www.chef.io/end-user-license-agreement, unless there is an executed agreement in effect between you and Progress that covers the Progress Chef products ("Master Agreement"), in which case the Master Agreement shall govern. Source code obtained from the Chef GitHub repository is made available under Apache-2.0, a copy of which is included.

Skylight is a smart profiler for Rails, Sinatra, and other Ruby apps.

Profile provides a way to Profile your Ruby application.

stackprofx is a hacky derivative of stackprof, the sampling profiler for Ruby 2.1+.

MethodProfiler observes your code and generates reports about the methods that were run and how long they took.

You can read provision profile into Hash, get signed certificate and verify it with p12 files

Profile engine for the muck system.

Raygun application performance monitoring core Profiler