Free Business Software

Gnu Cash
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.
http://www.gnucash.org/

Open Office
Open Office.org is the leading open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more. It is available in many languages and works on all common computers. It stores all your data in an international open standard format and can also read and write files from other common office software packages.
http://why.openoffice.org/

Home Inventory
Home Inventory software will help you create a room-by-room inventory of your personal possessions.
http://www.knowyourstuff.org/

Accounting Express
Microsoft Office Accounting Express is an easy to use accounting package that works with other Office applications
http://www.ideawins.com/express.aspx

Dynacom Accounting
Dynacom offers a complete range of accounting software for organizations of all sizes, all the way from a simple free accounting software relying on Microsoft Access databases to comprehensive financial management solutions
http://www.dynacom.com/

CWorks
CWorks is a computerized maintenance management system (CMMS) that delivers a variety of benefits to organizations by providing maintenance engineers and maintenance managers with the information they need. Available in four different versions, this CMMS software is delivered with full source code, making it easy to customize and modify to meet your needs.
http://www.cworks.com.my/

Aqura-Lite
Software development firm with accounting software AQURA and software products for canal builders and electronic simulators.
http://www.sadhanasoft.com/

NetCafe DS
NetCafe DS is a Cafe Control Management Program
http://www.dogansoft.com/

Delta60 Accounting
Delta60 is an Integrated Accounting Program for all uses. Some of the tasks that can be accomplished are Sales Invoicing, Inventory, Accounts Receivable, Accounts Payable, Payroll and General Ledger.
http://www.deltanet2.com/

Invoice It
invoiceit, invoice and accounting software, is an easy to learn invoice program, with ALL the features you need to run a small to medium business.
http://www.invoiceit.com/

CS Inventory
CS Inventory Software is an intuitive, easy to use, robust , multi-user inventory business management system and accounting software that includes inventory, customer management, vendor management, A/R, A/P and comes with extensive reporting tools.
http://www.cs-inventory-software.com/