It's one of the coolest things I found on the Internet. This is a simple self-dependent packing format (a squashed filesystem) that mounts itself during execution and runs the application from that, (a little complicated concept behind) but as end-user, we just need to download them and execute them, simple right?. that's why I use this as primary packaging system in rlxos. Alternatively, we have PKGUPD (which I don't recommend unless mentioned in guides) through which end-user (developers one) can install packages that can't be distributed as AppImages like GCC, LLVM, or maybe kernel headers. To know about PackageManagement in rlxos please follow the Package Management part of the guide.