basE91 is an advanced method for encoding binary data as ASCII characters. It is similar to UUencode or base64, but is more efficient. The overhead produced by basE91 depends on the input data. It amounts at most to 23% (versus 33% for base64) and can range down to 14%, which typically occurs on 0-byte blocks. This makes basE91 very useful for transferring larger files over binary unsafe connections like e-mail or terminal lines.
PHP Shell is a shell wrapped in a PHP script. It's a tool you can use to execute arbiritary shell-commands or browse the filesystem on your remote Web server. This replaces, to a degree, a normal telnet-connection. You can use it for administration and maintenance of your Web site using commands like ps, free, du, df, and more.
xtermcontrol enables dynamic control of XFree86 xterm properties. It makes it easy to change colors, titles, fonts, and the geometry of a running xterm, as well as to report the current settings of the properties. Window manipulations such as (de)iconify, raise and lower, maximize and restore, and reset are also supported. It also lets advanced users issue any xterm control sequence.
Mintty is a terminal emulator for Cygwin and MSYS with a native Windows user interface and minimalist design. It is based on parts of PuTTY by Simon Tatham and provides xterm-compatible terminal emulation, but does not require an X server. Its features include a simple options dialog, Unicode support, fullscreen mode, drag & drop, and window transparency.
MacTerm (formerly MacTelnet) is a complete terminal emulator for Mac OS X, for use with local or remote applications. It is also available for Classic Mac OS as a remote-only shell. It supports VT100, VT102, VT220, and parts of XTerm and ANSI, UTF-8 and other character sets, very accurate rendering of CP437 for use in BBS games, regular or tabbed windows, a full screen mode that works on up to two displays, dynamic search, powerful macros for entering text, running commands, and opening URLs, extensive preferences, including a flexible coloring and formatting system, Workspaces that spawn commands and auto-arrange windows, Growl notifications, text capture, floating keypads for control keys, and much more.