The January 29, 2025 entry of English Wikipedia’s Did you know… home page feature caught my attention:
… that Mark IV was the first commercial software to cross $10 million in total sales, and the first to cross $100 million as well?
It turns out Mark IV has quite an interesting history. I didn’t know about this early powerful report generator, initially for the IBM 7090 and later the 360. Mark IV managed to thrive as a commercial product despite the challenge of IBM giving away software.