Earlier quoted context omitted.
> 1. While the situation improved tremendously in certain areas the way to participate in Open Source is still very much fragmented. Most of the major open source projects (like Linux, Mozilla, Apache and nginx, to name a few) still have their own workflows, patches are still circulated in emails and issues are still being reported in a myriad ways. Despite of the big visibility GitHub has among the new open source p…
No, there are still newer projects that refuse to use github because it's a closed source system (e.g openstack).
Mozilla has a hard rule that they can't use closed-software for anything. I bitched about their 20-year-old-technology mailing lists and they said they had no choice. They couldn't use google-groups, et. al., because they were closed-source.