1.Google

>1.Google

>https://github.com/google

>2.Google Samples

https://github.com/googlesamples

>3.Google Codelabs

>https://github.com/googlecodelabs

>4.GoogleChrome

>https://github.com/GoogleChrome

>5.Google Creative Lab

>https://github.com/googlecreativelab

>6.Google Internationalization

人人皆可使用的Google开源字体

>https://github.com/googlei18n

>7.tensorflow

https://github.com/tensorflow

2.Facebook

>1.Facebook

>https://github.com/facebook

>2.Facebook Samples

>https://github.com/fbsamples

>3.facebookresearch

>https://github.com/facebookresearch

>4.Facebook Incubator

>https://github.com/facebookincubator

3.Twitter, Inc.

https://github.com/twitter

4.Square（android开源的类库多而且厉害）

https://github.com/square

5.Alibaba

>1.https://github.com/alibaba

>2.hiloteam(阿里，终端跨平台小游戏)

>https://github.com/hiloteam

>https://github.com/hiloteam/hilo

>3.ant-design(一套企业级的 UI 设计语言和 React 实现)

>https://github.com/ant-design

6.Kotlin（可以写Android,现在已经扶正了）

https://github.com/Kotlin

7.ReactiveX（函数响应式编程）

https://github.com/ReactiveX

https://github.com/Reactive-Extensions

8.Airbnb

https://github.com/airbnb

9.Apple

https://github.com/apple

10.Uber

https://github.com/uber

11.百度

>1.Baidu EFE team

>https://github.com/ecomfe

>2.baidu-research

>https://github.com/baidu-research

>3.echarts

https://github.com/apache/incubator-echarts

12.Bilibili（B站）

https://github.com/Bilibili

13.Yalantis（音乐播放，好多比较好的移动端效果）

https://github.com/Yalantis

https://yalantis.com/

14.Spring

https://github.com/spring-projects

15.饿了么

https://github.com/eleme

https://elelogistics.github.io/

16.腾讯相关

>1.腾讯

>https://github.com/Tencent

>2.腾讯前端库

>https://github.com/AlloyTeam

>3.微信开发团队

>https://github.com/WeMobileDev/article

17.Yalantis（好几个效果不错android的控件）

https://github.com/Yalantis

18.SwiftAndroid

https://github.com/SwiftAndroid

19.Ramotion（App Development Agency | Available for new projects）

https://github.com/Ramotion

20.Tinify(压缩图片的那个网站)

https://github.com/tinify

21.豆瓣

https://github.com/douban

22.WeUI（微信ui）

https://github.com/weui

23.美团·大众点评

https://github.com/Meituan-Dianping

24.极光开发者

https://github.com/jpush

25.Dropbox

https://github.com/dropbox

26.伯乐在线

https://github.com/jobbole

27.grpc（gRPC：Google开源的基于HTTP/2和ProtoBuf的通用RPC框架）

https://github.com/grpc

28.Nike Inc.(耐克)

https://github.com/Nike-Inc

29.Medium

https://github.com/Medium

30.Microsoft

https://github.com/Microsoft

31.Mapbox

https://github.com/mapbox

32.JetBrains(好多ide都是他家出的)

https://github.com/JetBrains

33.滴滴出行

https://github.com/didi

34.华为

>1.主团队

>https://github.com/Huawei

>2.大数据团队

>https://github.com/HuaweiBigData

35.小米

https://github.com/xiaomi

36.知乎

https://github.com/zhihu

37.vue

https://github.com/vuejs

38.iView

https://github.com/iview

39.Node

https://github.com/nodejs

40.Fuchsia

https://github.com/fuchsia-mirror

41.Flutter

https://github.com/flutter

42.Apache

https://github.com/apache

43.AMAP-Demo(高德开放平台示例中心)

https://github.com/amap-demo

44.GitHub

https://github.com/github

持续更新,排名不分先后。。。

欢迎大家补充