http://portforward.com
These are what it can be useful for, or just finding out about your router
3
3-In-A-Bed
360Share
A
ABC
Action PC Football 2006
Active Webcam
Active Worlds
Active Worlds File Transfer
Age of Empires
Age of Empires II
Age of Empires III
AIM Talk
AIM Video IM
Aleph One
Aliens vs Predator
America's Army
Apache
Apple Remote Desktop
Apprentice
Ares
Asheron's Call
ATC Battlefield 1942
ATC Battlefield 2
ATC Ghost Recon 2
ATC Rainbow Six Lockdown
ATC Splinter Cell Chaos Theory
ATC Splinter Cell Pandora Tomorrow
AudioReQuest
Azureus
B
BackupStream
BarracudaDrive
Battle Realms-Ubisoft
Battlecom
Battlefield 1942
Battlefield 2
Battlefield Vietnam
Bay VPN
BCDC++
BearShare
Bell South Home Monitoring System
Beyond Remote
BitComet
BitLord
BitSpirit
BitTornado
BitTorrent
Black and White
Blueserver
Bridge Commander
Brothers in Arms-Earned in Blood
BT Communicator
Buddy Phone
Buzz 3D VideoChat
BYOND Dream Seeker
BYOND Dream Seeker Host
C
Calista IP Phone
Call of Duty
Call of Duty 2
Call of Duty-United Offensive
Camfrog
Camstreams
...... etc