Luca is a full-featured accrual-based accounting system that runs on OS X. It has the ability to handle double-entry postings, real-time P&L reporting, and multiple currencies.
Features: unlimited levels for Chart of Accounts; easy to drill down to any level of detail; tracks Sales, Purchases, Receivables, Payables; allows partial payment of invoices; allows off-setting between invoices of same account; Billing, Settlement, & Base Currencies can all be different; calculates Forex Gain/Loss; Statement of Accounts and Aging Analysis can be generated at any time; and more.