Tk-RED is a procmail recipe generator. It uses a custom language Reciproc. It exports this language to a procmailrc file. Tk-RED is a graphical editor for writing recipes.
PPPGun-Dialer is a Tcl/Tk script that can be used to establish a PPP connection by dialing a remote terminal server. It is based on PPP-on/PPP-off scripts, but it is more flexible than those scripts, allowing a more intelligent dialog with the modem.