GnuCash is personal and small-business financial-accounting software, freely licensed under the GNU GPL and available for GNU/Linux, BSD, Solaris, Mac OS X and Microsoft Windows.
HomeBank is a free software. Use it to manage your personal accounts. It is designed to easy to use. Analyse your finances in detail using powerful filtering tools and graphs.
Money Manager Ex is a free, open-source, cross-platform, easy-to-use personal finance software. It primarily helps 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.
Free online personal finance software for budgeting and expense management. Track shared expenses, split bills, and debts.
Easy to use mobile expense tracker who saves to cloud and has amazing graphs and charts. Exports to CSV, Excel, PDF, Google Docs and even sends e-mail reports. Iphone, Symbian, Android, Nokia Maemo, Blackberry, Windows Phone 7 phone apps available.
Ledger is a powerful, double-entry accounting system that is accessed from the UNIX command-line. This may put off some users, since there is no flashy UI, but for those who want unparalleled reporting access to their data there are few alternatives.
Manager is free accounting software for Windows, Mac and Linux.
It features an intuitive and innovative user interface with modules such as cashbook, invoicing, receivables, payables, taxes and comprehensive financial reports.
The desktop edition is free while the cloud edition.
Banktivity is a personal and small business financial manager designed to manage bank accounts, credit cards and investments, analyze income and expenses with live updating charts, and plan your financial future with budgeting and forecasting.