ShadyFox is a plugin that alerts staff members of your server when players join with alternate accounts. It also allows for looking up players based off IP addresses or looking up IP addresses based off usernames.
ShadyFox stores each player's info in a MySQL database. If a player joins with an alternate account, players with the permission node to view the alerts will be informed that the player's are connected with the same IP address
So far ShadyFox is fairly basic, and it isn't very feature packed. If you think of anything that can be added, feel free to post in the comments or post on the forums
Some Plans:
Stumbled upon an issue with ShadyFox? Or just want to suggest a new feature? Visit our issue tracker to submit a ticket.