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I'd like to find an app that could be used for notifying people on other computers. We have about 10 interested people on Windows boxes on a LAN, and one dedicated box which runs 24/7.

Basically I'd like to have a small app that doesn't require installation, that would run in system tray and pop up a message.

Everyone could also disable notifications, and be able to send a message to everyone else.

I'm thinking that installing XMPP server on the 24/7 box and using portable Miranda that could work, but maybe there is also IRC client that can show notifications for each new message.

Do you have other ideas?

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... Wait, you'd rather install a IRC server than a XMPP server?! – Ignacio Vazquez-Abrams Jun 7 '11 at 9:01
I haven't installed any of those, that's why I'm asking for advice – Axarydax Jun 7 '11 at 11:06
How about a closed/invite only group on Twitter – Linker3000 Jun 7 '11 at 11:59

If you enable Windows' built-in "messenger" service you can probably use the net send or msg commands.

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thanks, but not all of us are in a domain, so that won't work – Axarydax Jun 7 '11 at 11:10
net send should work with a workgroup too. – RedGrittyBrick Jun 7 '11 at 11:38
but we also have mixed xp/vista/7 boxes – Axarydax Jun 7 '11 at 12:05
I believe msg is available in all the business versions of XP, Vista and 7. It certainly exists in XP Pro SP3. Admittedly I haven't tried to make it work. – RedGrittyBrick Jun 7 '11 at 13:08

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