LAN Messenger - LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...
DisplayFusion - DisplayFusion will make your multi-monitor life much easier.
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.
Preme for Windows - Speeds up your window switching.
MyChat - Secure instant messenger for any network
GridMove - GridMove - A window management tool that can quickly arrange your windows into desktop grids.