Slixmpp is a (friendly) fork of SleekXMPP, which goal is to “improve” the core of the library by entirely removing all threads from the library and using an event-based approach instead.

Features of this library: * No threads. See http://blog.louiz.org/slixmpp. All parts of the API relying on threads are removed. * No support for Python < 3.4. This allows one to remove a lot of workaround and other hacks. * No backward compatibility with old SleekXMPP version. For example things like “addHandler = add_handler” are removed.

You should use this library only if you would prefer not to use threads in your application. If threads don’t really bother you, or if you need Python 2 support, then you should use SleekXMPP instead.