You’ve found Episode 15 of the Model Rocket Show!  This time around, are talking to Neil Weinstock from  the Open Rocket project about this useful software tool.

Neil Weinstock is one of the developers working on open Rocket, which is free open source model, rocket and high power rocket design and simulation software. Many folks find that it's also a great tool for designing paint schemes too!
We'll dive into what it is, where you can get it, and about some exciting new updates. 
If you stick around til the end of the show, The N00b has a little something for you.