What the rise of permissive open source licenses means

"If you use any open source software, you have to make the rest of your software open source." That's what former Microsoft CEO Steve Ballmer said back in 2001, and while his statement was never true, it must have spread some FUD (fear, uncertainty and doubt) about free software. Probably that was the intention.This FUD about open source software is mainly about open source licensing. There are many different licenses, some more restrictive (some people use the term "protective") than others. Re