Conglomerate will be a system for authoring, storing, transforming, and generally working with structured information like XML/SGML (yes, it will do DocBook, or any other DTD you care to throw at it). It's not a finished product, but there is working code with the basic functionality, screenshots, and ample descriptions of the system.
CTWM is a highly-configurable window manager based on the classic TWM window manager. It supports xpms, multiple workspaces, advanced icon managment, animated icons and backgrounds, 3D titles and borders, etc. It offers rudimentary Gnome support and is backwards-compatible with TWM.
Cyrprint converts postscript files generated by netscape (original pages must be in koi8 encoding). It can be used as a pass-through filter. It adds cyrillic fonts to the beginning of the file and substitutes font names in the original PS document. The substitution and addition of fonts can be controlled with styles.
dclock is an X11 desktop clock with a realistic LED-style display of the current time. Its features include full configuration of the digit style, military time, alarm, hourly bell, formatted date display, fade-out and fade-in of numbers and anti-aliased rendering of digits. This version is an update of dclock by Dan Heller.
Dia is a program for creating diagrams of all kinds. The current version can do UML class diagrams, Entity-Relationship modeling, network diagrams, and much more. The engine is very flexible and dynamically loads diagram-types from disk. It stores diagrams in an XML format, but can read and write a number of different formats.
DiaCanvas is a generalized version of the drawing canvas used by DIA. It extends some features used by DIA and adds new ones, while preserving as many of the original features as possible. This project is no longer actively maintained. It is suggested that you try DiaCanvas2 instead.