Hi, symmy has been moved to kde-review for the usual review process.
It's a tiny frontend for the symmetric encryption functionality of GPG. It doesn't handle signing or public/private keys, as we already have kgpg or kleopatra for that.
Symmy can be useful if you have to send some sensitive file to someone, of if you want to store it on some proprietary cloud service.
It comes with a CLI application and plugins for GUI integration with Dolphin/Plasma.
I'd like to move it to either extragear-utils or kde-utils, if everything looks good.
Thanks, Elvis