We've unveiled the beta version of our new javaclient at

There may be better web-based mud clients out there, but I've not seen them. Features include:
1. Aliases
2. Macros (key-bindings)
3. Variable substitution
4. Triggers/Auto-responses
5. Colour highlighting based on triggers.
6. Customizeable background.
7. Font resizing.
8. Automatically reloads saved settings upon character login.

To be added in the near future is the ability to copy and paste. The only reason this isn't in is because the only way to enable copying and pasting is to buy a signing id from Verisign, which we'll soon and then provide a javaclient build that players can use via webstart.

--matt