aterm (AfterStep term) is an xterm replacement, based on rxvt v.2.4.8. It includes features such as NeXT style scrollbar, resource efficient pseudo-transparency. It understands root background changes by AfterStep Pager and Esetroot. The primary goal of aterm is to provide cool visual features without resource consumption. It can be compiled to utilize AfterStep's libasimage for wider image format support.
gogetty is a tiny getty written from scratch. It'll only work with linux VCs and possibly other software terminals, as it doesn't try to perform any terminal ioctls (for example, to set baud rate). However, it is the only extant getty to correctly handle session and program group IDs, letting you use it to start an arbitrary program on another console.
Gsh is a graphical shell. It integrates a terminal window, a normal shell, and various GUI components into a single package which allows easier and more powerful operations than you can have with a shell and terminal window seperately. Gsh is already fully functional, but there are many avenues of devlopment yet to be explored.
Morseall allows you to control your computer using only the mouse buttons. It allows you to produce keystrokes by tapping Morse codes with just a single button or with a three-button mouse for faster entry. Morseall is designed for disabled users who can only move one muscle. Morseall can also be used with wearable laptops, tablets, or handhelds where a keyboard would be inconvenient or unavailable.
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.
This is the old BSD tn3270 made to compile under Linux/GLIBC. It is not perfect and not being actively maintained. Also in the same directory is 3270v4.1 from CERN, made to compile under Linux/GLIBC, which looks nicer. If you are interested in these programs, you may also want to look at the Linux tn5250 project.