lwmenu is a TCL/Tk program that displays an application menu at the current X pointer position. It was written in order to scratch an itch--namely that lwm (Lightweight Window Manager) does not have a built-in application menu. It can be also used for other window managers that either don't have their own application menu (such as lwm) or don't currently have a menu-method written for the Debian menu system.
Memchan is an extension library to the script language Tcl, as created by John Ousterhout. It provides two new channel types for in-memory channels and the appropriate commands for their creation. They are useful to transfer large amounts of data between procedures or interpreters, and additionally provide an easy interface to on-the-fly generation of code too. No need to set or append to a string, just do a simple puts.
Mktclapp is a tool for combining C/C++ code with Tcl/Tk to build a standalone executable that will run on machines without Tcl/Tk installed. Developers can use C/C++ for speed-critical code and Tcl/Tk for the user interface. The resulting sources will compile without change on both Unix and Windows98/NT. Embedded Tcl/Tk scripts can be shrouded so that they are unreadable by end users.
Mod_dtcl is a free/open source implementation of server-parsed Tcl under Apache. It allows you to tightly integrate HTML with Tcl, a widely-used scripting language with many years of development invested in it. There are also many external Tcl modules that you can load into mod_dtcl, to create images, access databases, etc.