Founded in 1998, NetSuite, Inc. is the leading provider of integrated business application software for small and midsize businesses. With thousands of customers globally using NetSuite's online products and professional services, companies are enabled to manage all key business operations�in a single hosted system, including: customer relationship management (CRM), order fulfillment, inventory, finance and product assembly, ecommerce, Web site management, and employee productivity. .....
Microsoft - Windows Mobile, Pocket PC 2000, Pocket PC 2002, Windows Mobile 2003, Windows Mobile 2003 SE, Windows Mobile 5.0, Windows Mobile 6, Windows CE 5.0, Windows Millennium, Windows NT, Windows NT 4.0, Windows 2000, Windows XP, Windows Server 2003, Windows Vista, Windows Home server, Windows server 2008, Windows 7, Windows Preinstallation Environment
It is a web based solution, all that you need is a computer with a good internet connectivity.
You do not need any kind of database also.