Apache Tcl - mod_dtcl
An Open Source implementation of server parsed Tcl, running under Apache. It allows you to tightly integrate HTML with Tcl.
cgi.tcl
CGI support library for Tcl programmers supporting forms, tables, cookies, file upload, plug-ins, JavaScript, Netscape extensions, and debugging and handling CGI errors.
FTP Library Package for Tcl/Tk
Provides client side of the File Transfer Protocol (FTP).
The Zircon X11 IRC Client
A X Window interface to internet relay chat written in Tcl/Tk and using the native network communications of Tcl.
WWW Tools and Utilities
Tcl-based web servers, applets, and other assorted tools.