Java

• Dom4j - Flexible XML framework
• Gson - Google Library to support JSON
• Xstream - Serialize objects to XML and back again
• JAXB - Java Architecture for XML Binding

Android

• Universal-Image-Loader - Powerful and flexible library for loading, caching and displaying images
• greenDAO - greenDAO is a light and fast ORM solution that maps objects to SQLite databases
• EventBus - Android optimized event bus that simplifies communication

JavaScript

• fullPage.js - To create fullscreen scrolling websites / single page websites
• lunr.js - Simple full-text search
• Trip.js - Help you customize a tutorial trip easily with more flexibilities
• Moment.js - Parse, validate, manipulate, and display dates in JavaScript.
• Underscore.js - It provides a whole mess of useful functional programming helpers without extending any built-in objects.

Angular 1

• Protractor - End-to-end test framework for AngularJS applications
• angular-media-player - Directive for audio and video
• Smart table - Module to easily display data in a table
• ng-table - Module to easily display data in a table
• ngToast - AngularJS toast

Angular 2

• Angular 2 - Official Website
• Angular 2 CN - Official Chinese Document Website
• Chinese Guides - Angular 2 Developer Guides Chinese Version

Node.js

• utility - A collection of useful utilities
• cheerio - Implementation of core jQuery designed specifically for the server
• mongoose - elegant mongodb object modeling for node.js
• SuperAgent - Super Agent is light-weight progressive ajax API
• connect-mongo - MongoDB session store for Express and Connect
• Morgan - HTTP request logger middleware for node.js
• ThinkJs - Use the full ES6/7 features to develop Node.js applications

RxJS

• RxJS Guides - provided by hubwiz.com
• RxJS Doc - Chinese Doc

CSS

• loaders.css - Delightful and performance-focused pure css loading animations
• Load Awesome - Pure CSS Loaders and Spinners
• Hover.css - Collection of CSS3 powered hover effects
• Animate.css - Bunch of cool, fun, and cross-browser animation.

Front-end web UI/Framework

• Bootstrap - HTML, CSS, and JS framework for developing responsive, mobile first projects on the web
• Angular 1 - Material - Implementation of Google’s Material Design Specification by Angular 1
• Angular 2 - Material - Implementation of Google’s Material Design Specification by Angular 2

  Fonts

• Google Fonts - So it’s google fonts :D

Icons

• Github-Octicons - GitHub’s icons
• Font-Awesome - Scalable vector icons that can instantly be customized
• Iconfont - Alibaba Icon Library (Chinese)
• flag-icon-css - Country Flags
• weloveiconfonts - Icon fonts
• Material Icon - Material icons

Color

• Minimalist-Color-Palettes - Minimalist Color Palettes

Tool

• ProcessOn - UML web APP for team (Chinese)
• draw.io - UML web APP for team
• WinSCP - SFTP, SCP and FTP client for Windows

Books

• GitHub Cheat Sheet - GitHub Practical Tips
• Git Quick Reference - Git Quick Reference
• HTTP API Design Guide - HTTP+JSON API design practices

Writing

• Pandoc- Markdown+Pandoc: A light-weight solution for academia writing