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.
AweMUD is a MUD server for use with fantasy-settings. Features include fully dynamic objects and characters, an advanced scripting system, and custom worlds. The engine will eventually have completely interactive rooms (items can be placed under benches, doors can be destroyed), complex magick, and interactive NPCs.
GNU TeXmacs is a free wysiwyw (what you see is what you want) editing platform with special features for scientists. The software aims to provide a unified and user friendly framework for editing structured documents with different types of content: text, mathematics, graphics, interactive content. TeXmacs can also be used as an interface to many external systems for computer algebra, numerical analysis, and statistics. New presentation styles can be written by the user and new features can be added to the editor using Scheme.
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.