I'm helping lead software development for <a href="http://respira.works" rel="nofollow">http://respira.works</a>, another one of these emergency ventilator projects.<p>Our software is licensed as Apache 2. I'm not sure if the HW license is settled, but the intent is to go with a similarly-permissive license.<p>To preempt the big question of, how are we different from the many other orgs trying to do a similar thing: We're trying to build a ventilator that a COVID patient can be on for multiple weeks, not just as an emergency stopgap until they can get on a "real" ventilator. We believe that this would be hard with e.g. an approach based on a breather bag to build a device that's sensitive enough not to harm a patient over the course of weeks.<p>Happy to answer any questions.