some more PyPI-related entries

README.md

@@ -112,7 +112,10 @@ A curated list of awesome Python frameworks, libraries and software. Inspired by
 
 *Local PyPI repositories and proxies.*
 
-* [devpi](http://doc.devpi.net/latest/) - PyPI server and packaging/testing/release tool
+* [Python Wiki PyPiImplementations](https://wiki.python.org/moin/PyPiImplementations) - A (somewhat dated) wiki list of PyPI compatible implementations.
+* [devpi](http://doc.devpi.net/latest/) - PyPI server and packaging/testing/release tool.
+* [localshop](https://github.com/mvantellingen/localshop) - PyPI server which mirrors official packages on-demand, and also supports local (private) package uploads.
+* [Defend Against Fruit](http://teamfruit.github.io/defend_against_fruit/) - Pragmatic, continuous deployment-style build system for Python, with very detailed conceptual documentation.
 
 ## Distribution