Hey Tim,
although I am a fan of open-source for particular projects, I have also noted that creating an open-source project also can cause more issues than it's worth. For instance, open-source projects dispite having a larger technical following often don't guarantee service or support, leaving users high and dry when their product doesnt work. It also has other caveats, in that you must understand a greater intensity and variety of technical skills (which I've found most people aren't normally interested in). To that end that is one reason I respect brewtroller but am not particularly interested in it.
Also I feel that people who adopt open-source projects, modify it and then package closed-source for sale haven't actually put in the hard yards to create the product so there's a philosophical dillema for me here. Again to that end, people who are interested in community projects are quite welcome/encouraged to support projects like brewtroller, but I am looking to sell a closed source and properly supported system to run alongside OS projects like brewtroller. Much like how as much as people hate windows, they have a dedicated team fixing problems 24x7, whereas *nix operating systems, if your bug gets fixed, either you did it, or you got very lucky.
I have kept variabilty and flexibility in mind when developing the system concepts, and have come up with some excellent ideas for making the system easy to upgrade when I release new software with bugfixes/features at minimal effort of the brewer. It is looking at this stage I will offer a "Lite" system for 3-tier/2-teir infusion/HERMS/RIMS setups which will generically run with most setups, coexisting with another brewing product (details to be released if/when fruition is apparent). I will probably be offering an "Advanced/Complete" version with much more features for the keen tinkerer, of which the "Lite" unit can be upgraded again at minimal effort and without requiring a new system - the basic "Lite" unit will be able to be upgraded to the Complete unit without having to ship out a whole new system. Plug and Play, as it were.
More details will be provided as soon as something interesting happens. Currently about ~40% through the prototype of the Lite version.
cheers