101 is a JavaScript library for dealing with immutable data in a functional manner.

Absinthe allows you to write GraphQL servers in Elixir.

One liners to use analytics librairies on your website

Quick reference to ANSI color codes.

A quick reference to common Apache Cordova commands.

Quick reference for the C macro preprocessor, which can be used independent of C/C++.

Here’s a 4-line snippet on how to get beautiful, antialiased text with CSS.

CSS flexbox cheat sheet - examples, containers, flex, child, tricks, vertical, mobile layout, reordering & more

Camp is a Node.js web server framework. This guide targets Camp v17.x.

This is a reference of styles that you can use on Devhints cheatsheets. How meta! You can refer to this when contributing your own cheatsheets to the GitHub repo.

Quick reference to the HTML DOM createRange API.

Quick introduction to the HTML DOM selection API.

Quick reference for Deku, a minimal virtual DOM library. Deprecated: This is for Deku v1. See deku for a more updated cheatsheet.

Quick reference for Deku, a minimal virtual DOM library.

A quick overview of new JavaScript features in ES2015, ES2016, ES2017, ES2018 and beyond.

Emmet is a markup language for expanding CSS rules into HTML

Food delivery numbers & sites for top restaurant chains in Metro Manila. For numbers outside Metro Manila, check their websites.

Git branches cheat sheet - branches, creating, delete local remote-tracking branches, merged branches, delete branches & more

Quick reference to some utilities in the git-extras utilities.

A list of revision specifications you can use with git log and many other Git commands. Summarized from gitrevisions(7) man page.

GnuPG is a complete and free implementation of the OpenPGP standard.

Goby’s language design is based on Ruby language’s, slim and shaped up. Differences in syntax between them is very small.

Google Analytics’s analytics.js is deprecated.

Short snippets on using Google Webfonts in a web page.

Gremlins is a JavaScript library to do “monkey-testing” by providing random user input (clicks, scrolls, and so on).

Harvey.js helps you build responsive interfaces.

Heroku is a web hosting platform supporting many languages, and this guide is a reference to Heroku’s command-line interface.

A quick reference for common Imagemagick commands and switches.

Intl.DateTimeFormat is used to format date strings in JavaScript.

A quick overview to Jest, a test framework for Node.js. This guide targets Jest v20.

Quick overview of JSDoc, the markup language used to annotate JavaScript source code files

Knex is an SQL query builder for Node.js. This guide targets v0.13.0.

Kotlin is a statically typed programming language for modern multiplatform applications.

These are CSS properties that will cause “layout thrashing”. Avoid changing them to prevent bottlenecks in your UI performance.

A bunch of bugs to take care of if you’re going to target legacy IE browsers.

meow is the easiest way to write command line apps for Node.js.

Mixpanel cheat sheet - identify, track events, references & more

Use blanket for easy coverage reporting for Mocha JavaScript tests.

Modella allows you to create simple models in JavaScript. This is a guide on basic usage of Modella in CoffeeScript.

Disable mouse acceleration with this one weird trick.

Nocode is the best way to write secure and reliable applications. Write nothing; deploy nowhere.

Quick reference to the Node.js path API.

Org mode is for keeping hierarchal notes (and more) in Emacs.

PHP Cheatsheet - get tips on objects, classes, gettlers, variables & more

PSD.rb parses Photoshop documents in Ruby.

Pacman is the package manager for Arch linux and its derivatives.

Parsley provides frontend form validation.

Polyfill.io is a service that serves JavaScript polyfills.

Premailer is a Ruby library that inlines CSS into HTML.

Python cheat sheet - lists, dict, iteration, string, casting, comprehensions, regex, reading, writing & more

A quick reference for the QUnit testing library in JavaScript.

Rails cheat sheet - helpers, css/jw packages, forms, controllers, redirection, render, head-only responses, default URL options & more

React is a JavaScript library for building user interfaces. This guide targets React v15 to v16.

Deprecated: this guide targets an old version of React (v0.14). See the updated React cheatsheet for new versions.

Rollup Rollup is a module bundler for JavaScript which compiles small pieces of code into something larger and more complex, such as a library or application.

Ronn generates Man pages. See ronn(1), ronn-format(7). Also see it on GitHub: rtomayko/ronn.

Quick reference to some features of the Ruby programming language.

Quick reference to the new features in Ruby 2.1.

A quick reference to common rubygems CLI commands.

Screen or GNU Screen is a terminal multiplexer. In other words, it means that you can start a screen session and then open any number of windows (virtual terminals). This does not contain all of screen’s commands and options, read GNU’s manual to see everything

ShellJS is a portable (Windows/Linux/OS X) implementation of Unix shell commands on top of the Node.js API.

Siege is an HTTP and HTTPS load testing tool.

Spacemacs is a distribution for Emacs.

Stencil is a compiler for web components made by the Ionic team. This guide targets Stencil v0.0.5.

Tabular is a Vim script for text alignment.

Quick reference for Travis CI yaml configuration. See official documentation.

Vagrant lets you build isolated virtual environments for your apps.

Vim is a very efficient text editor. This reference was made for Vim 8.0. For shortcut notation, see :help key-notation.

Vim is a very efficient text editor. This reference was made for Vim 8.0.

Visual Studio Code, or VSCode, is an open-source code editor. This guide targets VSCode v1.19.

Vue.js is an open-source Model–view–viewmodel JavaScript framework for building user interfaces and single-page applications.

Deprecated: this guide targets an old version of Vuej.js (v1.0.28). See the updated Vue.js cheatsheet for new versions.

mattgreen/watchexec runs commands whenever certain files change.

This is a very basic “getting started with Webpack” guide for use with Webpack v3. This doesn’t cover all features, but it should get you started in understanding the config file format.

weinre is a remote Web inspector. Note that it has been deprecated since 2016.

A quick reference to the ZNC IRC bouncer’s common commands.

Zombie is a full-stack testing solution for Node.js.

co allows you to use generators to manage async flow.

A small guide into installing jscoverage. Also see mocha-blanket.

rTorrent is a command-line torrent application. Here are some shortcut keys.

rbenv lets you manage installations of multiple Ruby versions.

Here’s some hints on using sed.

The strftime format is the standard date formatting for UNIX. It’s used in C, Ruby, and more.

See the processes in your Unix machine.