java：
https://github.com/ReactiveX/RxJava
https://github.com/elastic/elasticsearch
https://github.com/eclipse/vert.x
https://github.com/mockito/mockito
https://github.com/code4craft/webmagic
https://github.com/scribejava/scribejava
https://github.com/spring-projects/spring-framework
https://github.com/spring-projects/spring-boot
https://github.com/redisson/redisson
https://github.com/Netflix/SimianArmy
https://github.com/Netflix/Hystrix
C++
https://github.com/EZLippi/WebBench //网站压测工具
https://github.com/twitter/twemproxy
scala
https://github.com/twitter/finagle
https://github.com/akka/akka
https://github.com/playframework/playframework
spark
kafka
go
https://github.com/docker/docker
https://github.com/syncthing/syncthing
https://github.com/CodisLabs/codis
https://github.com/nsqio/nsq
TypeScript
https://github.com/ionic-team/ionic
https://github.com/ant-design/ant-design //TypeScript 编写的 React 组件库
python
https://github.com/aosabook/500lines
https://github.com/vinta/awesome-python
https://github.com/pallets/flask
https://github.com/donnemartin/system-design-primer
https://github.com/celery/celery
