Quite a few people are going to be installing Fedora 22 in the coming days, searching for things in the software center and not finding what they want. This is because some applications still don’t ship AppData files, which have become compulsory for this release. So far, over 53% of applications shipped in Fedora ship the required software center metadata, up from the original 12% in Fedora 21. If you don’t like this, you can either use dnf to install the package on the command line, or set gsettings set org.gnome.software require-appdata false . If you want to see your application in the software center in the future, please file a bug either upstream or downstream (I’ve already filed a lot of upstream bugs) or even better write the metadata and get it installed either upstream tarball or downstream in the Fedora package. Most upstream and downstream maintainers have shipped the extra software center information, but some others might need a little reminder about it from users.