Pinpoint and solve performance issues in your Ruby, Java, .NET, PHP, Python, iOS and Android apps with real user, application and server monitoring.
Instrumental makes it easy monitor your application metrics in realtime.
Featured categories
Working with Facebook7,522Rubyomniauth, koala »Gems and links that help with reading from and writing to Facebook.
Working with Twitter12,112Rubyomniauth, twitter and 9 more »Access Twitter with a dedicated API client, or authenticate users via oAuth.
User Authentication19,367Rubydevise, omniauth and 5 more »Allow users to authenticate with your app by providing them with dedicated user
accounts. Authenticate with email and password or via Facebook or Twitter oAuth.
A/B Testing4,138Rubysplit, vanity and 5 more »Track what matters, and optimize your conversion rates. Get insight into what
matters most in your sales funnel, and make more money with your existing
service or product.
API Builders13,565Rubygrape, rails-api and 11 more »Develop APIs with nice and consistent APIs. Your user's will love you.
API Caching and Rate Limiting1,335Rubyrack-attack, limiter and 1 more »Optimize your API's performance and behavior.
API Versioning1,582Rubyrocket_pants, versionist and 3 more »Versioning your APIs can help keep consistency while moving at a fast pace.
Don't screw your API consumers.
API: Clients for popular services1,542Rubylinkedin, tinder and 2 more »Great Ruby wrappers for APIs of popular web services. Interface with Facebook,
Twitter, and more.
API: Create Ruby API Clients1,559Rubyweary, nestful and 2 more »Build an API client for your favorite web service.
API: Great API examples716Rubybcx-api, api-documentation »Docs of great APIs to reference when building your own implementations.
ActionMailer: Email Previews4,659Rubymailcatcher, letter_opener and 3 more »Preview emails easily in development instead of sending them. Test the visual
design of your emails.
ActiveModel: Custom Validations2,208Rubyvalidates_timeliness, activevalidators and 25 more »Validate email, social profiles, urls, dates or post addresses and much more.
ActiveModel: Tableless models2,600Rubyvirtus, active_attr »Not all of your models need to be persisted. These gems help you to make model
objects behave like ActiveModel objects, though.
ActiveRecord: Caching830Rubyidentity_cache, record-cache »Specify how you want to cache your model objects, at the model level, and adds a
number of convenience methods for accessing those objects through the cache.
ActiveRecord: Comments2,551Rubyjuvia, acts_as_commentable and 1 more »Enable comments for your posts.
ActiveRecord: Data Migrations430Rubylarge-hadron-migrator, data_migrator »Migrate data schemas between different formats, including some schema
versioning.
ActiveRecord: Database Sharding1,812Rubyoctopus, db-charmer and 2 more »Distribute data across multiple databases.
ActiveRecord: Flags261Rubyflag_shih_tzu »Flag implementations apart from a range of boolean fields on your model.
ActiveRecord: Miscellaneous1,661Rubyactive_scaffold, upsert and 2 more »Various ActiveRecord extensions.
ActiveRecord: Multitenant Apps908Rubyapartment, acts_as_tenant and 2 more »Various approaches for separating data for different customers of yours.
ActiveRecord: Named scopes8,419Rubysqueel, ransack and 10 more »With scopes you can make your database queries more precise. Named scopes help
you reuse these helpers.
ActiveRecord: Nesting records5,283Rubyancestry, awesome_nested_set and 9 more »Easily and efficiently make your ActiveRecord model support hierarchies.
ActiveRecord: Normalize attributes497Rubyattribute_normalizer, strip_attributes and 1 more »Sanitize user input before saving it to the database. Strip whitespace, html
tags and more.
ActiveRecord: Rating / Liking / Voting4,508Rubyrecommendable, activerecord-reputation-system and 10 more »Tag, rate, vote or like records, and build social networks around these data
points.
ActiveRecord: Schema annotations1,823Rubyannotate_models, railroady »Annotate ActiveRecord models with table schema data.
ActiveRecord: Serialized attributes720Rubyactiverecord-postgres-hstore, store_configurable and 1 more »Store hashes and more in Postgres and other SQL datastores.
ActiveRecord: Soft Destroying1,291Rubyparanoia, rails3_acts_as_paranoid and 6 more »Mark records as destroyed instead of actually removing them. Recover them later
on.
ActiveRecord: Sortable lists1,758Rubyacts_as_list, datagrid and 3 more »Persist the positioning of your records in a certain order. Includes view
helpers for displaying sortable lists and tables, and drag-and-drop GUIs for
positioning the records.
ActiveRecord: Versioning and auditing4,483Rubypaper_trail, vestal_versions and 4 more »Track changes to your models' data. Audit updates and keep a history of
revisions.
Activity Tracking1,145Rubypublic_activity »Track and display changes to your models, e.g. in an activity stream.
Admin Interfaces for Rails12,156Rubyactive_admin, rails_admin and 10 more »Ready-made administration interfaces with authentication logics and nice DSLs
for your Rails apps.
Advanced Querying with ActiveRecord6,168Rubysqueel, ransack and 6 more »Retrieve data from complex queries, built easily.
Airplay989Rubyairplay, airplayer and 1 more »Stream music and videos to Apple Airplay compatible devices from Ruby.
App Servers12,629Rubypuma, goliath and 9 more »Web application servers than run your deployed code efficiently. Can increase
throughput on any platform.
Application Configuration Variables3,261Rubydotenv, figaro and 4 more »Configure your app with environment variables and more. Keep sensitive data out
of your version control system.
Apps: Chat Servers3,825Webkandan, Balloons.IO and 1 more »Complete team chat apps for self-hosting and code review.
Apps: Miscellaneous1,971Rubypomodoro, boxroom and 4 more »Various open-source apps for the web or the command line, such as a Pomodoro
time manager.
Assets8,177Rubycsscss, helium-css and 3 more »Optimize stylesheets and javascript files before sending them to the browser by
removing whitespace and more.
Autolinking and Embedding Content2,006Rubyauto_html, twitter-text-rb and 4 more »Auto-extract and link urls from user inputs or tweet bodys.
Automating Web Interaction2,193Rubymechanize, watir-webdriver »Automatically visit websites, click links, fill out and submit forms.
Background Jobs15,716Rubyresque, sidekiq and 8 more »Scale your web app by transferring long-running tasks from the web processes to
dedicated background workers.
Blogging Engines16,140Rubyoctopress, jekyll-bootstrap and 18 more »Start publishing a blog or a static site.
Business Advice61WebDraftLearningToWalk »Various bits of good business writing by and for developers from around the web.
Child processes606Rubychildprocess, posix-spawn and 1 more »Managing child processes made comfortable.
Cient-side Form Validations2,049Rubyclient_side_validations, html5_validators and 1 more »Pre-validate user input in the browser. Enable a great user experience.
Code quality metrics10,450Rubyrails_best_practices, rubocop and 9 more »Get stats for your code. Where can you improve?
Command line: Customize your terminal15,873Weboh-my-zsh, dotfiles »Customize your terminal and speed up common operations with shortcuts and more.
Concurrency6,897Rubycelluloid, eventmachine and 4 more »Create highly-concurrent gems and programs in Ruby. Base for great and speedy
open-source projects.
Continuous integration servers7,266RubyDrafttravis-ci, janky and 4 more »Distributed build systems and CI servers.
Countries387Rubycountries, iso_country_codes and 1 more »Select countries in Rails, get a lot of info and formatting help with country
data. Includes infos on phone numbers, currencies, postal addresses and more.
Create PDF documents8,367Rubyprawn, wicked_pdf and 11 more »Want to print some PDFs in Ruby? Here are your options.
Edit in Place8,054Javascript, RubyDraftx-editable, mercury and 5 more »Edit content in place in a what-you-see-is-what-you-get style.
Fabricate Fake Data1,822Rubyfaker, ffaker and 1 more »Generate large amounts of fake data e.g. for testing purposes.
File Uploads14,009Rubypaperclip, carrierwave and 13 more »Uploading files and attaching them to models can be a hassle. These projects
save your day. Send uploads to your server or directly to a storage providers
such as Amazon's S3. Track attachments to your models.
Form Builders for Rails12,155Rubyformtastic, simple_form and 11 more »Generate complex forms with readable markup. These form builders help you manage
nested associations and more.
Form Builders for Rails and Twitter Bootstrap1,133RubyDraftformtastic-bootstrap, twitter_bootstrap_form_for and 1 more »Form builders that help generate markup that can be quickly styled with Twitter
Bootstrap.
Forum Engines11,909Rubydiscourse, forem and 2 more »Forum engines that work standalone or could be included into a Rails app.
Building blocks for social networking capabilities of your app.
Fragment Caching948Rubycache_digests, multi_fetch_fragments »Easily cache rendered view fragments to speed up your application.
Frameworks: Scripting & Command Line Applications5,531Ruby, JavascriptDraftthor, rake and 7 more »Build command line applications, and manage repetitive tasks with style.
Friendly Ids in ActiveRecord3,342RubyDraftfriendly_id, stringex and 2 more »Point users to nice urls, e.g. 'mysite.com/posts/this-is-my-first-blog-post'
instead of 'mysite.com/posts/1'.
Friendships4,800Rubycommunityengine, social_stream and 4 more »Build social networks, with friendships, liking and disliking of records, and
messages between users.
Geocoding and maps6,149Rubygeocoder, Google-Maps-for-Rails and 7 more »Geocoding is the process of finding associated geographic coordinates (often
expressed as latitude and longitude) from other geographic data, such as street
addresses, or ZIP codes.
HTTP Clients10,551Rubyhttparty, typhoeus and 14 more »Perform external HTTP requests with ease. Easily consume third-party APIs.
Interactions844Rubymutations, active_interaction »Compose business logic into commands that sanitize and validation input. Extends
form objects and form models to perform defined transformations with your data.
Internationalizing Rails Apps384RubyDrafti18n-tasks, i15r »Allow your app to talk multiple language, display different time and currency
formats and more.
Interview Training8,393WebFront-end-Developer-Interview-Questions, code-problems »Common questions for developers' job interviews. Be prepared, dude.
Learning Git30,105Webgitignore, legit and 5 more »Basic and advanced Git wizardry. Includes guides, workflows, branching models,
and more.
Markdown parsers4,672Rubyredcarpet, rdiscount and 5 more »Render markdown in a variety of formats, including HTML, RDoc, and more.
Mass assignment protection1,013Rubystrong_parameters »Allow users to only assign values for fields they may access.
Mathematics and Statistics295RubyDraftdescriptive_statistics, aggregate »Your calculations just got easier.
Memcached Clients1,817Rubydalli »Interfaces to Memcached, an excellent key-value store for caching objects and
response fragments.
Metrics: Event Logging & Aggregation & Exception Tracking & Stats Servers11,496RubyDraftsentry, fnordmetric and 7 more »
Money and Currencies2,091Rubymoney, twitter-cldr-rb and 5 more »Working with multiple currencies, exchange rates and finances in general.
Multi-step Forms2,239Rubywicked, rails_apps_composer and 3 more »Create wizard forms with multiple steps for the user to fill.
Onlineshops6,031Rubyspree, ror_ecommerce and 2 more »Complete open-source online shopping systems built on Ruby on Rails and API
Clients for hosted shop solutions.
Open-Source Apps5,130RubyDraftkandan, writings »Learn from great open-sourced applications and improve your style.
Pagination7,754Rubykaminari, will_paginate and 5 more »Display records in pages, and allow users to navigation those pages.
Payments with Stripe8,167Rubyskeuocard, active_merchant and 11 more »Get paid using Stripe for credit card processing.
Presenters and decorators3,137Rubydraper, active_decorator and 2 more »Object-oriented programming for your views.
Project Management Apps17,509Rubygitlabhq, fulcrum and 5 more »Self-hosted project management and collaboration apps, including source code and
git hosting.
Rails App Generators & Bootstrapped Templates5,423RubyDraftrails-composer, rails_apps_composer and 7 more »
Rails App Tutorials3,327RubyDraftrails-stripe-membership-saas, rails3-bootstrap-devise-cancan and 6 more »
Ruby & Rails Styleguides8,260RubyDraftruby-style-guide, rails-style-guide and 3 more »Write idiomatic and lasting Ruby and Rails code and learn about best practices.
Ruby Implementations12,536Rubyruby, mruby and 4 more »Implementations of the Ruby Language for a variety of platforms and use cases.
Scheduling Recurring Background Jobs8,408RubyDraftwhenever, resque-scheduler and 4 more »Cron jobs for Ruby. Schedule jobs with a certain frequency, at certain times or
events.
Searching with ElasticSearch3,973Rubyretire, searchkick and 4 more »Provide searching, filtering, and full-text searching capabilities for your
applications. Integrate ElasticSearch with Ruby and Ruby on Rails. Update search
indexes automatically on record changes with callbacks and observers.
Searching with Sphinx1,450Rubythinking-sphinx, riddle »Full-text search with the Sphinx search engine.
Send snail mail208Rubysnail, biggs and 2 more »Enable your app to send physical letters, printed by a lettershop. Validate
incoming post adresses.
Speeding up development5,888RubyDraftzeus, spring and 4 more »Start continuous testruns more quickly.
Spreadsheets3,381Rubyaxlsx, roo and 13 more »Import and export spreadsheet data in .xls and .csv formats and more.
State Machines6,136Rubystate_machine, aasm and 6 more »Transition between states in ActiveRecord and Mongoid.
Static Sites23,121Rubyjekyll, middleman and 18 more »Build static sites using all your favorite gems and compile them to HTML, CSS
and Javascript when deploying.
Sublime Text Plugins18,666Webcolour-schemes, emmet-sublime and 18 more »Notable packages and themes for the Sublime Text Editor.
Syntax Highlighting866RubyDraftrouge, coderay »Server-side syntax highlighting for different languages.
Testing Javascript1,634Rubykonacha, jasminerice and 1 more »Test runners for your javascript files running on top of Rails.
Testing: Custom RSpec Matchers1,016Rubyshoulda-matchers, valid_attribute and 2 more »Matchers for special occasions.
Tests: Fabricate Objects5,222Rubyfactory_girl, fabrication and 2 more »Set up Ruby objects as test data.
Texteditors28,004Webbrackets, textmate and 3 more »A bunch of great open-source text editors. Please note that open-source does not
always mean free.
Translation interfaces1,208Rubyshuttle, phrasing »Bring your app to more users in different countries by allowing them to
translate your service or customize text, even if you're using only one
language.
Twitter Bootstrap for Rails Extensions2,596RubyDraftbootstrap-rails, less-rails-bootstrap and 6 more »
URL Parsers726Rubyaddressable, domainatrix »Split domains and urls into their various parts and more.
Uptime Monitoring1,822Webuptime »Can users reach your service? If not, you'll instantly be notified.
User Authentication19,367Rubydevise, omniauth and 5 more »Allow users to authenticate with your app by providing them with dedicated user
accounts. Authenticate with email and password or via Facebook or Twitter oAuth.
User Authorization10,083Rubycancan, pundit and 10 more »Authorize user actions on resources based on policies, abilities or roles.
Authenticate your users beforehand.
User Input Rendering Pipelines235Rubyslodown »Multi-step processing for user inputs. Render Markdown, sanitize HTML, auto-link
urls and embed external videos and photos in a pipeline.
Web App Frameworks37,805Rubyrails, sinatra and 7 more »Comprehensive web application frameworks that help you develop web applications
in style and speed. There's a variety of frameworks, each specializing in
solving various challenges.
Working with Autocompleting Searches9,523Ruby, Javascripttypeahead.js, rails3-jquery-autocomplete and 5 more »Autocomplete user inputs for a great user experience.
Working with Enumerations1,382Rubyenumerize, simple_enum and 5 more »Enumeration helpers for ActiveRecord and Mongoid.
Working with Facebook7,522Rubyomniauth, koala »Gems and links that help with reading from and writing to Facebook.
Working with Github10,947Rubyomniauth, hub and 8 more »Interact with the Github API or authenticate users via oAuth.
Working with Incoming Emails1,618RubyDraftmailman, griddler and 2 more »Receive and process inbound emails in Ruby and Rails.
Working with Key-Value Stores512RubyDraftmoneta, toystore and 1 more »ORMs and Interfaces for Key-Value Stores, including Redis et al.
Working with MongoDB4,763Rubymongoid, mongomapper and 1 more »Object-relational mappers for MongoDB and further plugins.
Working with MongoId6,909Rubymongoid, mongoid-slug and 21 more »Plugins for the MongoId ORM, a great object-relational mapper for MongoDB in
Ruby.
Working with NoSQL Datastores1,285RubyDraftcassandra, ripple and 1 more »Object-relational mappers for datastores such as Riak and Cassandra.
Working with Payments7,564Rubyskeuocard, active_merchant and 12 more »Process payments in Ruby. Encourage users to pay you easily by credit card or
Paypal. Manage subscriptions and your billing process.
Working with Phone Numbers1,140Rubycountries, phony and 4 more »Parse and validate international phone numbers.
Working with SMS803Rubytwilio-ruby, twilio-rb and 2 more »Send and receive short text messages. Send texts to mobile phones.
Working with Telephony1,301Rubytwilio-ruby, adhearsion and 3 more »Create telephone and conference calls and more for your business.
Working with Twitter12,112Rubyomniauth, twitter and 9 more »Access Twitter with a dedicated API client, or authenticate users via oAuth.
Working with time and dates4,580Rubychronic, local_time and 4 more »Parse and format times and extract dates from natural language.
oAuth Authentication and Servers9,048Rubyomniauth, doorkeeper and 9 more »Become an oAuth provider, and add oAuth authentication to your app. Add a
security layer to your API.