Pidgin is an instant messaging program for Windows, Linux, BSD, and other Unixes. Pidgin supports AIM, ICQ, Jabber/XMPP, MSN Messenger, Yahoo!, Bonjour, Gadu-Gadu, IRC, Novell GroupWise Messenger, QQ, Lotus Sametime, SILC, SIMPLE, MySpaceIM, and Zephyr.
Instructions written for Pidgin version 2.10.6 on 5/23/2013
First open Pidgin. If it's the first time you're launching the program, you'll see the Welcome screen. Click the Add button.
In the Basic tab, select "XMPP" from the Protocol: pulldown menu. Enter your PennKey in the Username: field. Enter "upenn.edu" in the Domain: field.
Click on the Advanced tab. Ensure the Connection security is set to "Require encryption". Ensure "5222" the Connect port: field. Enter "jabber.upenn.edu" in the Connect server: field. Click Add.
You are now prompted for your PennKey Password. After entering it, click OK to begin using Pidgin.
Information Systems and Computing, University of Pennsylvania