Softros LAN messenger - LAN messenger for an internal office chat for home or business users. It does not require a server and is very easy to install and use. It supports personal chats, group chats, message brodcasting, files transfer and remote desktop access.

Caffeine for Windows - Prevent your computer from going to sleep

MyChat - Secure instant messenger for any network

Caffeine for Linux - Inspired by the Mac OS X version, Caffeine for Linux is a status bar application able to...

BORGChat - BORGChat is a LAN messaging software program.

Caffeine for Mac - Caffeine is a tiny program that puts an icon in the right side of your menu bar.