Toadhttpd is a web server engine designed by Sean Woods, intended to be embeddable inside of a Tcl application. It started life as an effort to produce TclHttpd 4.0. However the change to object oriented code driven by coroutines made the interface alien enough to users of TclHttpd that I felt a name change was appropriate.

The core of ToadHttpd is packaged as the httpd module in Tcllib.

ToadHttpd was presented as a paper during the 2018 Tcl Developer's conference. My presentation is available on YouTube: