For whatever it's worth, I have been looking at GnuCash(.org), a volunteer maintained, "freely licensed" accounting package that is bold enough to make its source code publicly available. Originally developed to offer features similar to Quicken, it has grown to support a number of commercial accounting requirements. Available for Windows, OS X, and Linux. All data are stored locally, no cloud nonsense (or exposure). Must be doing something right because they've been around since 1998.

My primary reservation concerns the transition. I could take the cold-turkey approach and begin afresh with 1/1/2023, re-entering transactions to reconstruct the year to date. But being a data junkie, I'm reluctant to give up all that juicy past history. Haven't found a slam-dunk way to export data from QuickBooks in a manner that I could import into GnuCash. Thus, my hesitancy. Thanks, Intuit . . . for nothing.