WhereDidAllMyMoneyGo?, a personal multi-curency budget tracker based on double-entry accounting principles.
WhereDidAllMyMoneyGo? (or WDAMMG) comes in 3 versions : a 68k version for older Macs running pre-powerpc processors, a PPC version for system 7.6 (8,1 recommended) and above, and a preview Carbon version for OSX.
WDAMMG is available as shareware for US$25. You can find more information at Bert Torfsi home page.