[viceconsole]

A few years ago I wrote a workforce scheduling program designed to be used by non-programmers. I worked in a restricted environment so couldn't install anything. The whole thing ran on SWIPL's web offering.

Users simply had to change the basic "facts" (who was available on what days, how many people were needed), and the program solved for the various constraints and offered solutions.

It was maybe about 300 lines of Prolog, no complex dependencies. It replaced a pile of Python scripts that required a lot of state, didn't really work, and could only run on a few specific computers.

For regular users, it was relatively easy to understand and change the facts. SWIPL for web also offers a nice "notebook" interface that lets you mix data, code, and markdown / output blocks so the documentation was inline.