Website header
Learn why more developers choose SendGrid's SMTP relay services to deliver transactional emails triggered by web apps. Sign up for a free account today.
Pinpoint and solve performance issues in your Ruby, Java, .NET, PHP, Python, iOS and Android apps with real user, application and server monitoring.
A/B Testing4,756Rubysplit, 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 Builders14,308Rubygrape, rails-api and 11 more »Develop APIs with nice and consistent APIs. Your user's will love you.
API Caching and Rate Limiting1,445Rubyrack-attack, limiter and 1 more »Optimize your API's performance and behavior.
API Versioning1,619Rubyrocket_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 services1,560Rubygmail, linkedin and 2 more »Great Ruby wrappers for APIs of popular web services. Interface with Facebook, Twitter, and more.
API: Create Ruby API Clients1,581Rubyweary, nestful and 2 more »Build an API client for your favorite web service.
API: Great API examples729Rubybcx-api, api-documentation »Docs of great APIs to reference when building your own implementations.
ActionMailer: Email Previews4,826Rubymailcatcher, letter_opener and 3 more »Preview emails easily in development instead of sending them. Test the visual design of your emails.
ActiveModel: Custom Validations2,271Rubyvalidates_timeliness, activevalidators and 25 more »Validate email, social profiles, urls, dates or post addresses and much more.
ActiveModel: Tableless models2,702Rubyvirtus, 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: Caching847Rubyidentity_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: Comments2,609Rubyjuvia, 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 Sharding1,872Rubyoctopus, db-charmer and 2 more »Distribute data across multiple databases.
ActiveRecord: Flags272Rubyflag_shih_tzu »Flag implementations apart from a range of boolean fields on your model.
ActiveRecord: Miscellaneous1,678Rubyactive_scaffold, upsert and 2 more »Various ActiveRecord extensions.
ActiveRecord: Multitenant Apps971Rubyapartment, acts_as_tenant and 2 more »Various approaches for separating data for different customers of yours.
ActiveRecord: Named scopes8,982Rubysqueel, ransack and 10 more »With scopes you can make your database queries more precise. Named scopes help you reuse these helpers.
ActiveRecord: Nesting records5,442Rubyancestry, awesome_nested_set and 9 more »Easily and efficiently make your ActiveRecord model support hierarchies.
ActiveRecord: Normalize attributes513Rubyattribute_normalizer, strip_attributes and 1 more »Sanitize user input before saving it to the database. Strip whitespace, html tags and more.
ActiveRecord: Rating / Liking / Voting4,637Rubyrecommendable, activerecord-reputation-system and 10 more »Tag, rate, vote or like records, and build social networks around these data points.
ActiveRecord: Schema annotations2,019Rubyannotate_models, railroady »Annotate ActiveRecord models with table schema data.
ActiveRecord: Seeds1,821Rubyseed-fu, seedbank and 3 more »Define seed data for your databases.
ActiveRecord: Serialized attributes721Rubyactiverecord-postgres-hstore, store_configurable and 1 more »Store hashes and more in Postgres and other SQL datastores.
ActiveRecord: Soft Destroying1,384Rubyparanoia, rails3_acts_as_paranoid and 6 more »Mark records as destroyed instead of actually removing them. Recover them later on.
ActiveRecord: Sortable lists1,837Rubyacts_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 auditing4,637Rubypaper_trail, audited and 4 more »Track changes to your models' data. Audit updates and keep a history of revisions.
Activity Tracking1,209Rubypublic_activity »Track and display changes to your models, e.g. in an activity stream.
Admin Interfaces for Rails12,464Rubyactive_admin, rails_admin and 10 more »Ready-made administration interfaces with authentication logics and nice DSLs for your Rails apps.
Advanced Querying with ActiveRecord6,710Rubysqueel, ransack and 6 more »Retrieve data from complex queries, built easily.
Airplay1,116Rubyairplay, airstream and 1 more »Stream music and videos to Apple Airplay compatible devices from Ruby.
App Servers12,960Rubypuma, goliath and 9 more »Web application servers than run your deployed code efficiently. Can increase throughput on any platform.
Application Configuration Variables3,556Rubydotenv, figaro and 4 more »Configure your app with environment variables and more. Keep sensitive data out of your version control system.
Apps: Chat Servers4,049Webkandan, Balloons.IO and 1 more »Complete team chat apps for self-hosting and code review.
Apps: Miscellaneous2,021Rubypomodoro, boxroom and 4 more »Various open-source apps for the web or the command line, such as a Pomodoro time manager.
Assets8,309Rubycsscss, helium-css and 3 more »Optimize stylesheets and javascript files before sending them to the browser by removing whitespace and more.
Autolinking and Embedding Content2,079Rubyauto_html, twitter-text-rb and 4 more »Auto-extract and link urls from user inputs or tweet bodys.
Automating Web Interaction2,266Rubymechanize, watir-webdriver »Automatically visit websites, click links, fill out and submit forms.
Background Jobs16,452Rubyresque, sidekiq and 8 more »Scale your web app by transferring long-running tasks from the web processes to dedicated background workers.
Barcodes14Rubybarkick, plu »Working with Barcodes, EANs, UPCs, ISBNs and PLUs.
Blogging Engines16,523Rubyoctopress, 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 processes631Rubychildprocess, posix-spawn and 1 more »Managing child processes made comfortable.
Cient-side Form Validations2,061Rubyclient_side_validations, html5_validators and 1 more »Pre-validate user input in the browser. Enable a great user experience.
Code quality metrics11,220Rubyrails_best_practices, rubocop and 9 more »Get stats for your code. Where can you improve?
Command line: Customize your terminal16,987Weboh-my-zsh, dotfiles »Customize your terminal and speed up common operations with shortcuts and more.
Concurrency7,119Rubycelluloid, eventmachine and 4 more »Create highly-concurrent gems and programs in Ruby. Base for great and speedy open-source projects.
Console: IRB Replacements5,050RubyDraftpry, hirb and 3 more »
Content Management Systems11,527Rubyrefinerycms, engine and 19 more »Open-source CMS in Ruby.
Continuous integration servers7,503RubyDrafttravis-ci, janky and 4 more »Distributed build systems and CI servers.
Countries424Rubycountries, 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 documents8,777Rubyprawn, wicked_pdf and 11 more »Want to print some PDFs in Ruby? Here are your options.
Development: Development Machine Setup6,532RubyDraftlaptop, our-boxen and 5 more »
Edit in Place8,357Javascript, RubyDraftx-editable, mercury and 5 more »Edit content in place in a what-you-see-is-what-you-get style.
Fabricate Fake Data1,952Rubyfaker, ffaker and 1 more »Generate large amounts of fake data e.g. for testing purposes.
File Uploads14,395Rubypaperclip, 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.
Follow development21,562RubyDrafthuginn, watchman and 2 more »
Form Builders for Rails12,476Rubyformtastic, 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 Bootstrap1,146RubyDraftformtastic-bootstrap, twitter_bootstrap_form_for and 1 more »Form builders that help generate markup that can be quickly styled with Twitter Bootstrap.
Forms: Spam Minimization1,374RubyDraftnegative-captcha, rakismet and 6 more »
Forum Engines12,597Rubydiscourse, 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 Caching975Rubycache_digests, multi_fetch_fragments »Easily cache rendered view fragments to speed up your application.
Frameworks: Scripting & Command Line Applications6,960Ruby, JavascriptDraftthor, rake and 7 more »Build command line applications, and manage repetitive tasks with style.
Friendly Ids in ActiveRecord3,453RubyDraftfriendly_id, stringex and 2 more »Point users to nice urls, e.g. '' instead of ''.
Friendships4,894Rubycommunityengine, social_stream and 4 more »Build social networks, with friendships, liking and disliking of records, and messages between users.
Geocoding and maps6,330Rubygeocoder, 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.
Git Servers13,508Webgitlabhq, bananajour »Self-hosted git servers for collaboration in development.
HTTP Clients14,079Rubyhttparty, typhoeus and 14 more »Perform external HTTP requests with ease. Easily consume third-party APIs.
Hash Extensions1,729RubyDrafthashie, map and 4 more »
Interactions871Rubymutations, 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 Apps455RubyDrafti18n-tasks, i15r »Allow your app to talk multiple language, display different time and currency formats and more.
Interview Training8,850WebFront-end-Developer-Interview-Questions, code-problems »Common questions for developers' job interviews. Be prepared, dude.
Learning Git31,833Webgitignore, legit and 5 more »Basic and advanced Git wizardry. Includes guides, workflows, branching models, and more.
Learning: Ruby Basics4,971RubyDraftruby_koans, trail-map and 4 more »
Logging2,480RubyDraftquiet_assets, lograge and 6 more »
Markdown parsers4,824Rubyredcarpet, rdiscount and 5 more »Render markdown in a variety of formats, including HTML, RDoc, and more.
Mass assignment protection1,036Rubystrong_parameters »Allow users to only assign values for fields they may access.
Memcached Clients1,883Rubydalli »Interfaces to Memcached, an excellent key-value store for caching objects and response fragments.
Money and Currencies2,336Rubymoney, twitter-cldr-rb and 5 more »Working with multiple currencies, exchange rates and finances in general.
Multi-step Forms2,313Rubyrails_apps_composer, wicked and 3 more »Create wizard forms with multiple steps for the user to fill.
Navigation1,314RubyDraftsimple-navigation, gretel and 2 more »Navigation and Breadcrums.
OCR & Document Processing572RubyDraftdocsplit »Extract Metadata, split and convert documents.
Onlineshops6,216Rubyspree, 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 Apps5,372RubyDraftkandan, writings »Learn from great open-sourced applications and improve your style.
Pagination7,917Rubykaminari, will_paginate and 5 more »Display records in pages, and allow users to navigation those pages.
Parsers: JSON2,950RubyDraftyajl-ruby, oj and 5 more »
Payments with Paypal3,487Rubyactive_merchant, paypal_adaptive »Accept online payments with Paypal.
Payments with Stripe8,347Rubyactive_merchant, skeuocard and 11 more »Get paid using Stripe for credit card processing.
Presenters and decorators3,246Rubydraper, active_decorator and 2 more »Object-oriented programming for your views.
Profiling2,175RubyDraftperftools.rb, rblineprof »
Project Management Apps18,018Rubygitlabhq, fulcrum and 5 more »Self-hosted project management and collaboration apps, including source code and git hosting.
Rails App Generators & Bootstrapped Templates5,669RubyDraftrails-composer, rails_apps_composer and 7 more »
Rails App Tutorials3,384RubyDraftrails-stripe-membership-saas, rails3-bootstrap-devise-cancan and 6 more »
Realtime Rails apps781Rubysync »Turn your Rails apps into realtime experiences.
Ruby & Rails Styleguides8,753RubyDraftruby-style-guide, rails-style-guide and 3 more »Write idiomatic and lasting Ruby and Rails code and learn about best practices.
Ruby Implementations12,999Rubyruby, mruby and 4 more »Implementations of the Ruby Language for a variety of platforms and use cases.
Rule-based actions750WebDraftmaid »'If this then that' for your local files.
Scheduling Recurring Background Jobs9,380RubyDraftwhenever, resque-scheduler and 4 more »Cron jobs for Ruby. Schedule jobs with a certain frequency, at certain times or events.
Search Engine Optimization3,443RubyDraftfriendly_id, meta-tags and 1 more »SEO for Rails apps.
Searching with ElasticSearch4,482Rubyretire, 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 Postgres880Rubypg_search, textacular »Full-Text Searching right within Postgres.
Searching with Solr2,333Rubysunspot, rsolr and 1 more »Working with the Solr search engine.
Searching with Sphinx1,464Rubythinking-sphinx, riddle »Full-text search with the Sphinx search engine.
Send snail mail215Rubysnail, biggs and 2 more »Enable your app to send physical letters, printed by a lettershop. Validate incoming post adresses.
Serving Web Fonts226Rubyfistface, font_assets »Set required HTTP headers on icon fonts and more.
Site-wide announcements153Rubypaul_revere »One-off announcements for your users.
Speeding up development5,959RubyDraftzeus, spring and 4 more »Start continuous testruns more quickly.
Spreadsheets3,746Rubyaxlsx, roo and 13 more »Import and export spreadsheet data in .xls and .csv formats and more.
State Machines6,312Rubystate_machine, aasm and 6 more »Transition between states in ActiveRecord and Mongoid.
Static Pages in Rails1,412RubyDrafthigh_voltage, pages »Include static pages in your Rails app.
Static Sites23,469Rubyjekyll, middleman and 18 more »Build static sites using all your favorite gems and compile them to HTML, CSS and Javascript when deploying.
Sublime Text Plugins19,947Webcolour-schemes, emmet-sublime and 18 more »Notable packages and themes for the Sublime Text Editor.
Syntax Highlighting1,286RubyDraftrouge, coderay »Server-side syntax highlighting for different languages.
System daemon helpers1,116Weblunchy »Starting and stopping system daemons.
Tables & Grids923RubyDraftdatagrid, wice_grid and 4 more »
Templating Engines10,513Rubyslim, haml and 5 more »Craft your views with beautiful markup.
Testing Javascript2,183Rubykonacha, teaspoon and 1 more »Test runners for your javascript files running on top of Rails.
Testing: Custom RSpec Matchers1,100Rubyshoulda-matchers, accept_values_for and 2 more »Matchers for special occasions.
Tests: Fabricate Objects5,380Rubyfactory_girl, fabrication and 2 more »Fabricator, factories, fixture replacements, whatever you'd like to call them. Use one of them in your test suite.
Texteditors29,018Webbrackets, textmate and 3 more »A bunch of great open-source text editors. Please note that open-source does not always mean free.
Translation interfaces1,256Rubyshuttle, 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 Extensions2,658RubyDraftbootstrap-rails, less-rails-bootstrap and 6 more »
URL Parsers757Rubyaddressable, domainatrix »Split domains and urls into their various parts and more.
Uptime Monitoring1,921Webuptime »Can users reach your service? If not, you'll instantly be notified.
User Authentication19,879Rubydevise, 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 Authorization10,609Rubycancan, pundit and 10 more »Authorize user actions on resources based on policies, abilities or roles. Authenticate your users beforehand.
User Input Rendering Pipelines236Rubyslodown »Multi-step processing for user inputs. Render Markdown, sanitize HTML, auto-link urls and embed external videos and photos in a pipeline.
Views: Tables1,358RubyDraftdatagrid, wice_grid and 6 more »
Vim Plugins34,500WebYouCompleteMe, vim-pathogen and 8 more »Plugins for the Vim editor.
Web App Frameworks32,552Rubyrails, 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.
Web Crawling1,662Rubyupton, harvestman »Crawl and scrape websites with Ruby.
Websockets2,660Rubyem-websocket, celluloid-io and 2 more »Working with websockets in Ruby.
Wikis409RubyDraftolelo, gollum-site and 1 more »Ruby and Git-powered Wikis for self-hosting.
Working with Autocompleting Searches9,989Ruby, Javascripttypeahead.js, rails3-jquery-autocomplete and 5 more »Autocomplete user inputs for a great user experience.
Working with Enumerations1,443Rubyenumerize, simple_enum and 5 more »Enumeration helpers for ActiveRecord and Mongoid.
Working with Facebook7,704Rubyomniauth, koala »Gems and links that help with reading from and writing to Facebook.
Working with Github11,180Rubyomniauth, hub and 8 more »Interact with the Github API or authenticate users via oAuth.
Working with Heroku8,202Webforeman, dotfiles »Tips and tricks for deploying to Heroku.
Working with Incoming Emails1,660RubyDraftmailman, griddler and 2 more »Receive and process inbound emails in Ruby and Rails.
Working with Key-Value Stores539RubyDraftmoneta, toystore and 1 more »ORMs and Interfaces for Key-Value Stores, including Redis et al.
Working with MongoDB4,829Rubymongoid, mongomapper and 1 more »Object-relational mappers for MongoDB and further plugins.
Working with MongoId6,998Rubymongoid, mongoid-slug and 21 more »Plugins for the MongoId ORM, a great object-relational mapper for MongoDB in Ruby.
Working with NoSQL Datastores1,286RubyDraftcassandra, ripple and 1 more »Object-relational mappers for datastores such as Riak and Cassandra.
Working with Payments7,687Rubyactive_merchant, skeuocard 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 Numbers1,203Rubycountries, phony and 4 more »Parse and validate international phone numbers.
Working with SMS832Rubytwilio-ruby, nexmo and 2 more »Send and receive short text messages. Send texts to mobile phones.
Working with Telephony1,350Rubytwilio-ruby, adhearsion and 3 more »Create telephone and conference calls and more for your business.
Working with Twitter12,387Rubyomniauth, twitter and 9 more »Access Twitter with a dedicated API client, or authenticate users via oAuth.
Working with time and dates4,804Rubychronic, local_time and 4 more »Parse and format times and extract dates from natural language.
XML Parsers and builders3,517RubyDraftnokogiri, ox and 6 more »
oAuth Authentication and Servers9,282Rubyomniauth, doorkeeper and 9 more »Become an oAuth provider, and add oAuth authentication to your app. Add a security layer to your API.