GnuCash Double-Entry Accounting Program.

HomeBank is a personal accounting software package that runs on OpenBSD, Linux, FreeBSD, Microsoft Windows, Mac OS (via macports or homebrew) and AmigaOS.

taskblitz is set of tools to collaboratively get your work done including project management, chat, time tracking and invoicing.

You Need a Budget combines easy software with Four Simple Rules to help you quickly gain control of your money.

Moneydance is a personal finance software application.