DECO (Dynamic Encapsulator of C++ Objects) converts DC++, essentially C++ with extensions for "dynamic encapsulation," into standard C++. Used as-is, DECO can only convert the simplest form of interfaces (types) and implementations to C++, so although it could be interesting, its most practical use is probably to provide a start for parsing C++. Note that template and exception handling support is incomplete in the parser, since DC++ did not make use of these features.
The DECnet for Linux project aims to provide the kernel-level socket layer and a set of applications to allow Linux systems to participate in a DECnet phase IV network. It currently has an application library (suitable for building DECnet functionality into X11R6), file and terminal access.
Deadman's Redirect is designed to replace whatever is loaded when you click on the Home button in your browser. It is a Web surfer's power tool that can be completely customized, using HTML, to fit the needs of the user. It allows for URL redirection as well as an interface to various search engines through its aliasing system. It also supports user-set aliases with functional arguments, RSS headlines, and a history of all the URLs that pass through it.
Deadlock is a small, lightweight MUD based around dueling wizard wars. It is an experimental project which has the aim of exploring the use of Scheme as a worldbuilding language and also building a small standalone library, netezu, suitable for implementing lightweight, multithreaded, server/client software on Unix and Win32 systems.