Which Github Repositories Were Popular/Trending in April 2015?

The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.

:books: Freely available programming books

Bring data to life with SVG, Canvas and HTML. :bar_chart::chart_with_upwards_trend::tada:

AngularJS - HTML enhanced for web apps!

Moved to https://github.com/nodejs/node

jQuery JavaScript Library

The iconic SVG, font, and CSS toolkit

A professional front-end template for building fast, robust, and adaptable web apps or sites.

Ruby on Rails

A collection of useful .gitignore templates

It's a presentation framework based on the power of CSS3 transforms and transitions in modern browsers and inspired by the idea behind prezi.com.

Meteor, the JavaScript App Platform

🙃 A delightful community-driven (with 2,400+ contributors) framework for managing your zsh configuration. Includes 300+ optional plugins (rails, git, macOS, hub, docker, homebrew, node, php, python...

🍿 A cross-browser library of CSS animations. As easy to use as an easy thing.

Call all Node.js modules directly from DOM/WebWorker and enable a new way of writing applications with all Web technologies.

Linux kernel source tree

The HTML Presentation Framework

💀 The former home of Homebrew/homebrew (deprecated)

Give your JS App some Backbone with Models, Views, Collections, and Events

Parse, validate, manipulate, and display dates in javascript.

An open source code editor for the web, written in JavaScript, HTML and CSS.

The Moby Project - a collaborative project for the container ecosystem to assemble container-based systems

The library for web and native user interfaces.

File Upload widget with multiple file selection, drag&drop support, progress bar, validation and preview images, audio and video for jQuery. Supports cross-domain, chunked and resumable file uploads. ...

JavaScript 3D Library.

Magnificent app which corrects your previous console command.

A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev

A curated list of awesome iOS UI/UX libraries

:ok_hand: Drag and drop so simple it hurts

ResearchKit is an open source software framework that makes it easy to create apps for medical research or for other research projects.

A Git Style Guide

Finally, a "back to top" button that behaves like a real elevator.

JavaScript Style Guide

A framework for building native applications using React

:electron: Build cross-platform desktop apps with JavaScript, HTML, and CSS

A curated list of amazingly awesome open-source sysadmin resources.

A modern lazy loading library for images.

This aims to be an indie dev's definitive guide to building and launching your app, including pre-launch, marketing, building, QA, buzz building, and launch. More info at:

A topic-centric list of HQ open datasets.

A tiny, lightning fast jQuery-like library for modern browsers.

🔩 Like builtins, but boltons. 250+ constructs, recipes, and snippets which extend (and rely on nothing but) the Python standard library. Nothing like Michael Bolton.

Beautiful charts for iOS/tvOS/OSX! The Apple side of the crossplatform MPAndroidChart.

Get as many FPS as you need and amazing effects by rendering HTML/CSS in WebGL

Web scraper for NodeJS

The library for web and native user interfaces.

Materialize, a CSS Framework based on Material Design

Git extension for versioning large files

The Laravel Lumen Framework.

A formatter for Python files

A list of helpful material to develop using Angular

Magnificent app which corrects your previous console command.

ResearchKit is an open source software framework that makes it easy to create apps for medical research or for other research projects.

A data science IDE for Python

Vector is an on-host performance monitoring framework which exposes hand picked high resolution metrics to every engineer’s browser.

Google Voice with Receptionist abilities, built on top of Twilio

Gesture recognizer tool [Swift / iOS]

A tool for secrets management, encryption as a service, and privileged access management

A Git Style Guide

DEPRECATED - A minimal component-based JavaScript framework

🚀 A robust, performance-focused, and full-featured Redis client for Node.js.

:ok_hand: Drag and drop so simple it hurts

Functional Programming concepts, examples and patterns illustrated in Haskell, Ocaml and Python

A support library for VectorDrawable and AnimatedVectorDrawable classes introduced in Lollipop

Pure Python Vim clone.

Bring web standards to native platform

CSS framework for dummies, without a single CSS class: nicely renders properly formatted HTML5 pages

SquiDB is a SQLite database library for Android and iOS

Template auto layout cell for automatically UITableViewCell height calculating

Morph DOM elements from one state to another with smooth animations and transitions

This aims to be an indie dev's definitive guide to building and launching your app, including pre-launch, marketing, building, QA, buzz building, and launch. More info at:

A extension of POP(from facebook) custom animation. Inspired by tweaner(https://code.google.com/p/tweaner), MMTweanerAnimation provide 10 types of custom animation while using POP.

Gulps is an open source app for iOS and Apple Watch that lets you keep track of your daily water consumption.

code for Data Science From Scratch book

Android View that displays different content based on its state

A smart Hub for holding server stat