Guard Plugins

(Order: by area: popularity among beginners or ideally by star count)

NOTE: some plugin authors work on their own forks instead of the forks in the Guard organization. Please update the links below if they point to the wrong/outdated fork.

Plugin	Area	When to use
guard-jammit	Rails	Compressing assets (JS, CSS)
guard-zeus	Rails	Zeus speeds up startup time for Rails commands (development, server, testing)
guard-annotate	Rails	Inserts "cheatsheets" about your database schema into your source files
guard-passenger	Rails	Manages the Passenger server (restarts when necessary)
guard-sprockets	Rails	Recompiles assets using Sprockets
guard-migrate	Rails	Migrates the database whenever you add/change migrations
guard-jekyll-plus	Web Development	Extensive plugin for working with Jekyll projects
guard-middleman	Web Development	Rebuilds Middleman static websites
guard-coffeescript	Web Development	Compiles CoffeeScript files
guard-compass	Web Development	Rebuilds your CSS files in Compass Sass projects
guard-sass	Web Development	Recompiles Sass files to CSS
guard-steering	Web Development	Speed up Handlebar.js templates by precompiling them
guard-cucumber	Testing	Reruns changed/affected Cucumber Features
guard-cane	Code Quality	fails the build if your source files fail the quality level
guard-ctags-bundler	IDE	regenerates CTags files so editors can find method definitions
guard-rubocop	Code Quality	Check your source files to style violations and potential problems
guard-brakeman	Rails	Scans your Rails application for known security holes (CVE's)
guard-shell	Utility	Runs shell commands when changes happen - also supports notifications and long -running programs
guard-hologram	Documentation	generates beautiful style guides for CSS
guard-teaspoon	Testing	Web testing with PhantomJS or Selenium WebDriver
guard-lilypond	Music	Engraving music scores
guard-s3	DevOps	Synchronize folders with Amazon S3 buckets
guard-puppet	DevOps	Helps build Puppet catalogs for deploying and managing sites and servers
guard-webrick	Web Development	Restarts WEBrick server when needed
guard-go	Utility	Run and restart go programs and servers when changed
guard-motion	Testing	reruns specs for RubyMotion (iOS, Android, OSX Ruby apps)
guard-phpunit	Testing	Guard::PHPUnit automatically runs your tests
guard-rake	Utility	reruns a rake task when files change
guard-docbook-status	Documentation	update docbook document overviews (structure stats)
guard-pusher	Web Development	Send messages to multiple iPad/iPhone browsers (like "reload page")
guard-frank	Testing	rerun Frank-Cucumber (iOS) features
guard-calabash-ios	Testing	return Calabash iOS Cucumber features
guard-redis	Utility	restarts Redis server when needed
guard-shopify	Web Development	automatically upload and update Shopify templates when they change
guard-readme-on-github	Documentation	preview GitHub pages locally before pushing them to GH
guard-rsync	Utility	automatically sync directories with RSync whenever they change
guard-jasmine-headless-webkit	Testing	rerun Jasmine tests in a headless WebKit instance
guard-jshint-node	Code Quality	detect errors and potential problems in JavaScript files
guard-resque	Utility	restarts Resque workers
guard-delayed	Utility	automatically restarts delayed_job workers
guard-rocco	Documentation	regenerates Rocco docs
guard-slim	Web Development	regenerate slim templates
guard-rails_best_practices	Rails	check if code matches Rails Best Practices
guard-gimli	Documentation	convert markup files (markdown, rdoc) into PDF files
guard-sprite-factory	Web Development	regenerate CSS sprites from a series of images
guard-jasmine-node	Testing	reruns Jasmine Node.js tests
guard-post	Utility	automatically load text files into database records (Mongoid, ActiveRecord, etc.)
guard-autorefresh	Rails	Reload the browser whenever views change
guard-zen	Utility	Runs Ruby Koans
guard-premailer	Web Development	inline CSS in email templates
guard-uglify	Web Development	compress JavaScript files using uglifier gem
guard-jenkins	Testing	sets a Jenkins status image depending whether there's a failure or not
guard-git-scribe	Documentation	rebuild git-scribe ebooks
guard-flopbox	Utility	synchronize directories via SFTP
guard-markdown	Documentation	convert Markdown files to HTML
guard-chef	DevOps	watches and reloads Chef recipes automatically
guard-prove	Testing	reruns Perl tests

NOTE: if any above plugins are broken or outdated, try the following:

1. find the gem on rubygems.org, then go to the homepage
2. file an issue there and wait up to a few days for the author to respond
3. if the plugin author isn't responding CC a Guard maintainer in the issue (e.g. me: @e2)

Outdated/Obsolete plugins

Outdated Plugin	Why outdated/obsolete
guard-spring	guard-rspec supports running RSpec with Spring and a lot more
guard-rails-assets	not sure if it works with Rails 4
guard-jekyll	superseeded by guard-jekyll-plus
guard-rspectacle	Embedded RSpec runner - probably better to use Guard::Rspec or Guard::Zeus
guard-coffeedripper	probably outdated
guard-focus	probably can be replaces with Guard::RSpec with custom config
guard-jessie	likely superseeded by guard-jasmine
guard-stitch	alternative to guard-sprockets, but may be outdated
guard-db	probably replaced with guard-migrate
Rails-Autotester	probably replaced with Guard::Minitest
guard-sprockets2	probably outdated
guard-hydra	probably replaced with Guard::RSpec using parallel specs (check Guard::RSpec Readme)
guard-ego	Guard can now reload itself
guard-jslint-on-rails	probably outdated
guard-mozrepl	probably superseeded by Guard::LiveReload
guard-jstd	probably superseeded by other JavaScript testing Guard plugins
guard-phantomjs	probably superseeded by other JavaScript testing Guard plugins
guard-krl	updates cloud-based Kinetic Rules Engine rule files (company dissolved)
guard-soca	likely outdated
guard-stendhal	likely outdated