Designed to be easy to use, yet powerful and flexible, GnuCash allows you to track bank accounts, stocks, income and expenses. As quick and intuitive to use as a checkbook register, it is based on professional accounting principles to ensure balanced books and accurate reports.
Feature HighlightsQIF/OFX/HBCI Import, Transaction Matching Reports, Graphs Scheduled Transactions Financial Calculations Double-Entry Accounting Stock/Bond/Mutual Fund Accounts Small-Business Accounting Customers, Vendors, Jobs, Invoices, A/P, A/R

http://www.gnucash.org/