Acute Softwares Network Diary - Educational Description:

Allows small businesses and companies to share appointments from a central server. Each user on the LAN runs the diary Client, which keeps their own appointments, file usage and PC usage on their own PC. To make appointments public they simply tick a box and it is automatically copied to the server.

This is the Educational Site License, which is will handle up 100+ clients depending on the speed of the server, the network speed and the client usage patterns.

Upgrades are free for 2 years and full email support is included.