GnuCash - A personal and small-business financial-accounting software, licensed under GNU/GPL and available for Linux, Windows, Mac OS X, BSD, and Solaris.
Kraft - Kraft is aimed at the demands of small businesses.
HomeBank - Access Financial Services. Easy, fee-free banking for entrepreneurs Get the financial tools and insights to start, build, and grow your business.
QuickBooks - Business runs better with QuickBooks, the #1 accounting solution for small business.
Money Manager Ex - Money Manager Ex is a free, open-source, cross-platform, easy-to-use personal finance software.
Odoo - An all-integrated business app suite to unleash your growth potential.