GnuCash - A personal and small-business financial-accounting software, licensed under GNU/GPL and available for Linux, Windows, Mac OS X, BSD, and Solaris.

Mint - Free personal finance software to assist you to manage your money, financial planning, and budget planning tools. Achieve your financial goals with Mint.

Pocketsmith - Smart budgeting & personal finance software

Penny - Penny is a personal finance app that takes the pain out of keeping track of your finances.

YouNeedABudget - Personal home budget software built with Four Simple Rules to help you quickly gain control of your money, get out of debt, and reach your financial goals!

FrontAccounting - FrontAccounting is a simple, but powerful, system for the entire ERP chain and covers: