SpyUO SpyUO is a tool to see decrypted and decompressed packets sent and received by UO client. .NET Framework based packet sniffer for Ultima Online . Origin: https://code.google.com/p/mondains-legacy/downloads/list Thanks Malganis for your hard work bringing this application as far as you did. It's been almost 2 years since the last update, hope you don't mind if I continue development! Refer to the packet list: https://docs.polserver.com/packets/index.php