Free Accounting Software
Outright is free online solution. There is no monthly fee, no credit card required, no trial or expiration dates. They also offer premium version Outright Plus with more features.
Free Accounting Software from Systems Online Inc.
Express Accounts (NCH software)
A free version of bookkeeping software is available for use by small businesses with less than five employees. The free version does not expire, but does not support some features designed for larger organizations. You can download the free accounting software version here.
GnuCash – Free Accounting Software
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.
Designed to be easy to use, yet powerful and flexible, GnuCash allows you to track bank accounts, stocks, income and expenses. As quick and intuitive to use as a checkbook register, it is based on professional accounting principles to ensure balanced books and accurate reports.