Both they are lightweight interfaces, but the latter is more modern. But starting from Ubuntu 18.10, it will change to LXQt. It traditionally uses the LXDE interface. Lubuntu is one of official flavors of Ubuntu.
#Free lightwright software#
They will not pre-install a large amount of software that may not be used, thereby reducing the consumption of system resources and freeing up more resources for the main software or applications you want to run. You don't like the OS publisher to preinstall fancy and useless software in the OS: The lightweight distros come with the most basic tools and applications.Therefore, they require low hardware configuration and can run well on old PC.