GnuCash - A personal and small-business financial-accounting software, licensed under GNU/GPL and available for Linux, Windows, Mac OS X, BSD, and Solaris.
KMyMoney - KMyMoney is a personal finance manager for KDE.
HomeBank - Access Financial Services. Easy, fee-free banking for entrepreneurs Get the financial tools and insights to start, build, and grow your business.
Money Manager Ex - Money Manager Ex is a free, open-source, cross-platform, easy-to-use personal finance software.
MoneyWallet - Advanced expense manager that allows you to track your expenses and plan budgets.
Financisto - Business & Commerce