Soiled is a Flash-based telnet client and terminal emulator, supporting both char-by-char and line-by-line mode. In line-by-line mode, it has some features that make it suitable for MUDs, such as aliases, macros, and hotkeys. Since it is implemented in Flash, it can be used from a Web browser.
DevClient is a highly customizable MUD client designed to be friendly and easy to use. It features full parsing of ANSI color codes, support for aliases, macro binding, keypad navigation, MCCP 1 and 2, accounts and automatic login management, prompt parsing, logging, and more. Its functionality and graphics can be extended with simple server definition files. It can be easily translated into any language. It can detect when a new version of itself is available and upgrade itself without restarting.