The nightlies are generated twice every day. There are several packages:
core (formerly "rewrite") [download]The Python Wikipedia Robot Framework is a collection of tools made to fit the maintenance need on Wikipedia, but it can also be used on other MediaWiki sites. recent changes
Downloadspywikibot package directory.
Also it's possible to download one week old version of core: directory.
Latest stable versionLatest stable version is 2.0rc3 directory.
compat (formerly "trunk") [download]The older version of pywikibot which is not being supporte anymore. recent changes
Downloadspywikibot package directory