Freeware Descriptions:

PopNote is a lightweight yet robust peer to peer Instant Messaging communication client that operates over the Internet or LAN´s. PopNote can send an instant message that will pop up on the destination´s Desktop on arrival; and or allow more aggressive real time chatting. PopNote´s unique Echo feature confirms the recipient received your message.

Here is complete features (taken from authors site):
What’s New in version 3.3:

  • Fixed bug in Ban user function.
  • Fixed bug in copy IP to clipboard function.

PopNote 3.2 Screenshot

File Size / OS:

  • 259 KB / Windows 9x - ME - 2000 - NT - XP - 2003 - Vista

Download PopNote 3.2: