File System
Rapyd Filesystem is clean, “system” is separated from “application” (usually you can upgrade by replacing “rapyd” folder). Furthermore, you can isolate application pieces in “modules” folder (so you can organize a cms in modules).
If you need to customize “rapyd/libraries” you can build your extended version in “application/ libraries”
Autoload: you do not have to worry about load classes before instancing or extending, Rapyd autoload will find and include all needed files (even if they are in a different folder/module).