Recommend a messenger for the local network?

Question

Computer networks

There is a network from 50 computers at office. Need a messenger for text messaging with the ability to send files. Something like GOchat, and, of course, free.

Answer 1

Jabber, Any server, any client. PM, conference, file sharing out of the box.

Answer 2

Bimoid, it's called

Answer 3

Bingo's Chat of course! bingosoft.info/downloads/bingochat
Wonderful LAN chat on Windows machines. Simple to genius

Answer 4

Openire+Spark

Answer 5

XMPP . Cope with 50 and 50 thousand and 50 million:
Ejabberd + mod http upload + Conversations
But in your case, prosody.im + mod http upload is enough