uoproxy is a proxy server for Ultima Online, a MMORPG.
transparent auto-reconnect after a server or network failure
(e.g. DSL disconnect, server maintenance); the UO client won't
notice, macros keep running without user interaction
backgrounding the connection, i.e. quit your client and the
proxy will stay online, for macroing off kill counters
multi-headed (playing a character with multiple clients)
character change without logout
faking your client IP
faking client version
circumventing a shard's login server
easy exploit development (if you know C)
Read documentation online.
You can download
uoproxy from GitHub.