For years spreadsheets have been used to design and prototype scheduling systems. They have now grown up, and are being used to develop serious production scheduling applications.
There is a world-wide shortage of IT skills, but there is a solid foundation of spreadsheet literacy, within most enterprises, that can be uplifted and harnessed for user-developed solutions. We work with operations managers, production managers, planners and schedulers to uplift their spreadsheet skills and work with them to build solid, practical planning and scheduling applications.
We have been designing, building and implementing production-scheduling systems for manufacturing companies since 1990. When PC's and spreadsheets were less capable than they are now, we used spreadsheets to design and prototype scheduling algorithms, and to train on some of the principles of scheduling. Prototype designs were then handed over to software developers to write in more resilient and efficient programming languages.