NetPlug is an extensible multi-connections, multi-protocol, network client program, written in pure Tcl/Tk. Includes a complete Irc client plug in that you should love if you like IrcII 'classic' look & feel (plus customizable style/colors scheme, sound,... Now includes full DCC support (with GUI), ircII like aliases and improved scripting (Tcl!), keywords (your nick...) highlighting, and more
tkbiff allows arbitrary commands to be executed upon mail reception. If you like programs such as xbiff and xbiff++ but wish they were more flexible, then you'll like tkbiff. Unlike other biffs, tkbiff is fully customizable. tkbiff also doesn't waste your valuable screen space with icons; instead, it shows you the mail itself. It supports UNIX, Mac, and Windows, IMAP, POP, and UNIX-style mail files, and SSL and APOP.
RHEED for Linux is designed to aquire data from RHEED (Reflection High Energy Electron Diffraction) images in Molecular Beam Epitaxy and for controlling an electron beam gun. It is possible to determine growth rate of a semiconductor crystal from RHEED-Oscillations, to aquire Lines Of Interest (LOIs) in realtime, and develop incident angle dependent intensity curves. The Electron Beam Gun EK35BR from Staib Instruments is supported.