That I know of, there's GnuCash, which seems to be just like Quickbooks. There's also KMyMoney, which I showed my mom (a CPA) and she called it "a simplified version of Quickbooks."
Or you could use a spreadsheet program like Gnumeric or OpenOffice.
----- Original Message ----
From: Michael Havens <bmike101@cox.net>
To: plug-discuss@lists.plug.phoenix.az.us
Sent: Thursday, March 1, 2007 4:59:12 PM
Subject: Cash manager.