All,

If you're looking for accounting solutions on Linux, check out Quasar Accounting. It's more heavy-duty than SQL-Ledger; and while it's just a tad bit more complex to install, it's worth it. There are advanced inventory control features, costing, pricing, A/R, A/P, customer management, discounts per store, etc. The feature list is 50 pages long! The only thing missing for U.S. Markets is Payroll and interfaces to payment systems for credit card auth... but considering that there are services that offer payroll processing, and if you use Authorize.net (probably others) for your credit card, you can still do all that stuff online from a Linux or Windows workstation.

Considering that you essentially get the value contained in QuickBooks Enterprise for free, it's worth a shot. Also offers Point Of Sale if you don't mind paying a very reasonable cost...

http://www.linuxcanada.com

There is currently discussion on the developers mailing list about integrating the next version with an online shopping cart system, zWarehouse.