QuickBooks, by Intuit, is horizontal cloud accounting and bookkeeping software for small and mid-sized businesses. It provides a general ledger, invoicing, expense and bill tracking, bank feeds with auto-categorization and reconciliation, financial reporting (P&L, balance sheet, cash flow), sales-tax automation, and built-in payments via QuickBooks Payments. It is not STR-native, but it is the accounting ledger most STR bookkeepers and property managers rely on, and many STR PMS/accounting tools sync into it.
Listed on STR Market Map, the short-term-rental software marketplace.