NicerApp WebOS
Take a video or (tiled) background of any resolution, and project information onto that using any weblanguage you want.
Written in a style simple enough for children to learn from.
This is the 5th major version of this software, version 6 can be found here.
Due to maintenance difficulties (a desktop operating system upgrade with side-effects), not all of these pages and sites work correctly at the moment.
UPDATE (20-09-2024) : these problems are persisting longer than usual this year. this can and will happen to many website-owners (who specialize in apps development) on my type of operating system every 2 years, from April to late September, but hopefully not much longer than that.
I am currently awaiting for my database server providers to upgrade their software to this latest major upgrade of my core PC operating system.