Base software
Included apps and utilities steer the distro in an initial direction.
ike all these distros, Lubuntu comes with Firefox as the browser. Beyond that, there is a smattering of essential L utilities that have a bias towards being Qt-based and lightweight. The PCManFM file manager is a good example in its Qt variant. It fits in well with the LXQt desktop. The Full install option adds weightier options such as the excellent Krita image editor and the Element chat client. To be critical, some of the utility apps look too lightweight for a general-purpose distro.