Q:

Free portable Message Sequence Chart Generator

My Message Seqence Chart Generator of choice is Msc-generator. Alas, I cannot find a portable version.
What altrernatives are there? Must  

run on Windows  
be gratis  
for commerical use  

Preferably, like my favourite, accept ascii text as input (e.g define two columns, sender & recevier, then send a message by sender->recevier:message name;) and show me my MSC in a GUI as I draw it, event by event.
However, I will accept a pure GUI solution, with no ascii inpput (which means that I cannot feed it the output of other programs).
I am aware of msc-gen, but that, though portable, is only command line driven; I would prefer to have the option of choice between command line & GUI. Any others?

A:

You can pack all dependencies in one executable. Such programs like BoxedApp Packer and Enigma Virtual Box can create a portable version of the program. Works for Windows. 
BoxedApp is not gratis, but I like this programm. [OP note: single user $299, site license $3,999]
Molebox also was good [OP note: looks like Docker. See also 5 Container Alternatives to Docker]

