Info exchange between two VB programs

We need a function or a way of passing information/data between two Visual Basic .exe programs. Our application will have a "program launcher" that will call several .exe programs, and we need to be able to know 1) What programs are still open when closing the "launcher" and when launching a program, for transfering control instead of re-launching it. 2) What is the status of these programs; if in "edit mode", be able warn the user. 3) Close all the opened programs before closing the "launcher". ## Deliverables Complete source code of all work done. Complete copyrights to all work purchased. Basic documentation. Basic comments on the code.