Money Manager Ex is free, open-source, cross-platform, easy-to-use personal
finance software.  It primarily helps to organize one's finances and keeps
track of where, when, and how the money goes.  It is also a great tool to
get a bird's eye view of your financial worth.

Money Manager includes all the basic features that 90% of users would want
to see in a personal finance application.  The design goals are to
concentrate on simplicity and user-friendliness -- something one can use
everyday.

WWW: http://www.codelathe.com/mmex/