Rodent is a continuation of Xffm, the original XFce file manager. It also includes several previous XFCE apps like icontheme, diff viewer, file previews, a search tool and samba browser, an application menu, userspace filesystems, process manager, a system package manger, and file shredding. Rodent filemanager is still optimized for speediness and a small footprint, runs on BSD/Linux systems. It's intended to be convenient to power users.
Plasma is the desktop component of KDE. It's shell is modularly designed and can harbour nested applets and widgets besides traditional icon shortcuts. It's based entirely on Qt5 with QML (Qt modeling language), KDE Frameworks 5, and OpenGL rendering.