What: tclwebtest
Description: Tool to write automated tests for web applications. Provides simple API for issuing HTTP requests, dealing with results, taking care of redirects and cookies, and some basic HTML parsing functionality. Currently at version 1.0.
Updated: 03/2005
Contact: See web site

To improve the performance of the core program available from SourceForge, look here: for a link to an improved version.

Also take a look at the Tcl Webtest Recorder at:

escargo 2012-12-13 - TwtR is no longer a current Firefox extension (having the latest version that it claimed to work with being Firefox 3.0).

Is there any way TwtR could be updated to current Firefox technology?

The Pipeline programming page has a Tcl driver for web/browser testing.

see w3simpack