With Reasonably Smart, we're committed to being as open as we possibly can. In the case of our software, it's mostly open source already. You can fetch it now, using git, by cloning http://platform.reasonablysmart.com:81/.
The next parts I need to work on (and its getting urgent) are moving away from the hand-rolled web server (which has served us well, and is great for development purposes) and on to Apache. This won't be hard, I just need to get it done.