PPAs, like any apt software archive, can replace any package on your system. For example, a PPA maintainer could replace your kernel with one that doesn't boot, or replace Xorg with a version that includes a keylogger and sends your credit card details to Eastern Gabistan. That's why we don't provide PPA discovery in USC, or promote PPAs as a method of publishing software for end users. If you do add a PPA, its packages become visible in USC, and it's added as an item in the "All Software" menu, but that's as far as we go.
Fortunately, it is not correct that PPAs are the only way to publish free open-source apps. Since 2011 you have been able to use the MyApps system for that. <https://myapps.developer.ubuntu.com/dev/apps/> ** Changed in: software-center (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1409542 Title: PPAs not visible in the Software Center To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/1409542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs