The UnOfficial Squaresoft MUD is free of charge, and can be accessed from almost any computer with an internet connection, as well as from a phone.
If you want a better interface, you can download and install a MUD client and use that to connect to UOSSMUD. MUD clients are programs which connect to MUDs and usually offer additional helpful features, such as aliases, macros, triggers, and speedwalks. Some of the more popular MUD clients include MUSHclient and Cmud for Windows, as well as Mudlet for Mac. For Android, Andromud or MuClient work well. For iPhone, MUDMaster is a good choice.
If you connect using a client, you will need to know that the server for UOSSMUD is uossmud.sandwich.net, and the port is 9000.
Some of our hard-working players have created a custom audio package for UOSSMUD which uses sound effects and music from Squaresoft games. Thanks to Kaelyn for the original design, and Yukiko for the majority of the work. This sound package works with Mushclient and is a self-contained client for Windows. You can download it here. Just unzip and run mushclient.exe to begin playing.