GPager is a small IM for LANs. Simple Instant Messenger for local networks. Uses multicast and does not require dedicated server. Supports multiple subnets separated by routers.

GPager Features:
1. Free and opensource (GPL)
2. Distributed p2p. Does not requre dedicated server.
3. Works with multiple subnetworks and LANs
4. Clean and simple GUI.

The license of this software is Free, you can free download and free use this lan messenger software.