Compiler
Compiler Explorer - https://godbolt.org/
Code
http://rosettacode.org/ - Rosetta Code
Programming
A source code search engine - https://searchcode.com/
Java Source Code Search - http://grepcode.com/
Browser
Web Browser Compatibility Tables - http://www.webbrowsercompatibility.com/
JavaScript
Babel - https://babeljs.io/
ECMAScript compatibility table - https://kangax.github.io/compat-table/es6/
Swift
Swift Language in Chinese - https://github.com/DiveinEdu/swift-language-in-chinese
Regex
https://blog.robertelder.org/regular-expression-visualizer/ - The Regular Expression Visualizer, Simulator & Cross-Compiler Tool
Desgin
White House Web API Standards - https://github.com/WhiteHouse/api-standards
Blog
三醒的Blog - https://libereco.cn/
快速的java小知识分享 - http://www.javaflush.com/
Yun Notes - http://blog.yunnotes.net/