I think this is hard to answer since "biggest" and "own" are both so hard to define. Is lines of code the key here? Or the number of users? And does it count if

I think this is hard to answer since "biggest" and "own" are both so hard to define. Is lines of code the key here? Or the number of users? And does it count if you just pull together a ton of existing libraries to build on preexisting work?