Python IM server

[Lutz Horn]

Hi,

>   I want to develop a instant message server, simply has user and 
> group entity.
> 
> Is there any better existing open-source one?

Take a look at XMPP[0]. There are some Python libraries[1].

[0] https://en.wikipedia.org/wiki/XMPP
[1] http://xmpp.org/xmpp-software/libraries/

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