GeVeZe Instant LAN Messenger

From SEM Software:

GeVeZe is a messenger designed for LANs and its GUI is based on common messengers like MSN messenger and ICQ for easy use. You can exchange messages, files, and URLs with integrated plug-ins without any server, and multi session support allows you to send and receive them at same time. In addition, contact list lets you easy access to other GeVeZe users and checking of user's online/offline status. You can use broadcast message plug-in to send administrative messages to your whole co-workers and also it has a message archive to centralize all of your incoming and outgoing messages into a one single file.

E-mail sending, checking, and reminder are the other exciting features of GeVeZe. Reminder allows you to write yourself reminders and preset the date and time you would like to receive them. Additionally, sounds are customizable for all events in GeVeZe and plug-in support allows easy program enhancement.