The SIMPL project (http://www.icanprogram.com/simpl ) aims to bring the 
simplicity and power of the Send/Receive/Reply messaging (first 
pioneered by QNX) to the Linux world. 

SIMPL modules are themselves Linux executables and can be written in 
any number of languages now (C,  C++,  Tcl/Tk and Python).   A SIMPL 
application consists of one or more of these modules interacting in a 
single SIMPL sandbox.    A SIMPL application can consist of SIMPL 
modules written in a mixture of supported languages.  eg.  a Tcl/Tk 
module talking to a C++ module. 


In addtion SIMPL applications can be spread across a network 
seamlessly through the use of TCP/IP or RS232 surrogates.    In most 
cases this redeployment can occur without any code change or 
recompilation. 


Tcl/Tk was one of the earliest languages (after C) to be added to the 
SIMPL family,  and it has attracted a steady following over the 8+ 
years that it has been available. 


SIMPL-Tcl/Tk modules can be built for deployment on a Linux OS.   In 
addition SIMPL-Tcl/Tk scripts written for a non Linux OS can interact 
seamlessly with a SIMPL application using the tclSurrogate (TCP/IP) 
protocol which SIMPL-Tcl/Tk supports. This means that a Tcl/Tk script 
running under Windows can participate seamlessly in a SIMPL 
application running on a Linux network.   In fact many users have 
deployed SIMPL-Tcl/Tk for just this capability. 


The one area that SIMPL-Tcl/Tk has neglected is the area of web 
applications.   The SIMPL-Python extension now sports this ability. 
We can't let the SIMPL-Tcl/Tk extension fall behind the Python crew ! 


The easiest way to get aquainted with the SIMPL-Tcl/Tk toolset is to 
download its self installing archive for Linux.    This is safely 
deployed in /tmp to allow full exploration with an option to 
permanently install the release in a directory of your choosing. 


SIMPL-Tcl/Tk self installing archive -  http://www.icanprogram.com/simpl/tcl.self.html  


the SIMPL project team 
PS. 
There is a great repository of Tcl/Tk sample code associated with a 
SIMPL presentation made a few years back at a local LUG: 


http://www.icanprogram.com/hosug