What is the difference between this one and pub_server?

[JoernLee]

这个和pub_server在功能上有哪些差异？
What is the functional difference between this and pub_server?

[Swain]

Hi @JoernLee
pub_server is a simple self-hosted site for internal package provided by Dart Team of Google. But it's be marked with 'DISCONTINUED'.
pub-dev is the source code of pub.dev, which should be deployed on Google AppEngine.