No idea on what exactly you need out of it, my only finance software experience is homegrown ERP and doing ETL stuff for Workday, so I guess if you have a $2mil budget for your software I could help out some
That said, I would maybe look at GnuCash -
https://www.gnucash.org//download.phtml I did use it once years ago to import a buddys old check ledger that he used as a repair/maintenance log for his VW Bus and his Moto Guzi restoration, just needed to import it well enough to print it out for him.