tanzer is described as "A very serious, industrial web framework in Tcl". See the web site for documentation, examples and the Git repository:
dbohdan 2014-10-12: Interesting! I assume the the name is a reference to Perl's Dancer . It would be nice if the developer added a more detailed overview of this framework to the web framework comparison matrix.
xan 2014-10-12: It sure is named after Dancer! However, one of the big draws of tanzer is that it doesn't expect a request handler to read the entire request nor response in one single go, which should hopefully allow for much better performing web applications without standing in one's way much.